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Zhang CQ, Gao S, Bo L, Song HM, Liu LM, Zheng MX, Fu Y, Ye F. Design, Synthesis, and Biological Activity of Novel Triketone-Containing Phenoxy Nicotinyl Inhibitors of HPPD. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11321-11330. [PMID: 38714361 DOI: 10.1021/acs.jafc.3c08705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2024]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (HPPD) is a crucial target enzyme in albino herbicides. The inhibition of HPPD activity interferes with the synthesis of carotenoids, blocking photosynthesis and resulting in bleaching and necrosis. To develop herbicides with excellent activity, a series of 3-hydroxy-2-(6-substituted phenoxynicotinoyl)-2-cyclohexen-1-one derivatives were designed via active substructure combination. The title compounds were characterized via infrared spectroscopy, 1H and 13C nuclear magnetic resonance spectroscopies, and high-resolution mass spectrometry. The structure of compound III-17 was confirmed via single-crystal X-ray diffraction. Preliminary tests demonstrated that some compounds had good herbicidal activity. Crop safety tests revealed that compound III-29 was safer than the commercial herbicide mesotrione in wheat and peanuts. Moreover, the compound exhibited the highest inhibitory activity against Arabidopsis thaliana HPPD (AtHPPD), with a half-maximal inhibitory concentration of 0.19 μM, demonstrating superior activity compared with mesotrione (0.28 μM) in vitro. A three-dimensional quantitative structure-activity relationship study revealed that the introduction of smaller groups to the 5-position of cyclohexanedione and negative charges to the 3-position of the benzene ring enhanced the herbicidal activity. A molecular structure comparison demonstrated that compound III-29 was beneficial to plant absorption and conduction. Molecular docking and molecular dynamics simulations further verified the stability of the complex formed by compound III-29 and AtHPPD. Thus, this study may provide insights into the development of green and efficient herbicides.
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Affiliation(s)
- Chen-Qing Zhang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Lin Bo
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Hao-Min Song
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Ming Liu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Mei-Xin Zheng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Hou ST, Han L, Li WR, Dai GY, Liu Y, Lu AM, Yang CL, Chen M. Design, synthesis and herbicidal activity of novel cyclohexanedione derivations containing pyrazole and pyridine groups as potential HPPD inhibitors. Mol Divers 2024:10.1007/s11030-024-10836-6. [PMID: 38609691 DOI: 10.1007/s11030-024-10836-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/04/2024] [Indexed: 04/14/2024]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27; HPPD) is one of the important target enzymes in the development of herbicides. To discover novel HPPD inhibitors with unique molecular, 39 cyclohexanedione derivations containing pyrazole and pyridine groups were designed and synthesized. The preliminary herbicidal activity test results showed that some compounds had obvious inhibitory effects on monocotyledon and dicotyledonous weeds. The herbicidal spectrums of the highly active compounds were further determined, and the compound G31 exhibited the best inhibitory rate over 90% against Plantago depressa Willd and Capsella bursa-pastoris at the dosages of 75.0 and 37.5 g ai/ha, which is comparable to the control herbicide mesotrione. Moreover, compound G31 showed excellent crop safety, with less than or equal to 10% injury rates to corn, sorghum, soybean and cotton at a dosage of 225 g ai/ha. Molecular docking and molecular dynamics simulation analysis revealed that the compound G31 could stably bind to Arabidopsis thaliana HPPD (AtHPPD). This study indicated that the compound G31 could be used as a lead molecular structure for the development of novel HPPD inhibitors, which provided an idea for the design of new herbicides with unique molecular scaffold.
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Affiliation(s)
- Shuai-Tao Hou
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ling Han
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wen-Rui Li
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Guang-Yu Dai
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yu Liu
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ai-Min Lu
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chun-Long Yang
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
- Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing, 210095, China.
| | - Min Chen
- College of Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
- Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing, 210095, China.
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3
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Leng XY, Pang QF, Ma YF, Ye BW, Ye F, Fu Y. Integrated Virtual Screening and Validation toward Potential HPPD Inhibition Herbicide. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4587-4595. [PMID: 38408430 DOI: 10.1021/acs.jafc.3c06312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, HPPD) is one of the most widely studied herbicide targets and has gained significant attention. To identify potential effective HPPD inhibitors, a rational multistep virtual screening workflow was built, which included CBP models (based on the receptor-ligand interactions in the crystal complex), Hypogen models with activity prediction ability (according to the derivation of structure-activity relationships from a set of molecules with reported activity values), and a consensus docking procedure (consisting of LibDock, Glide, and CDOCKER). About 1 million molecules containing diketone or β-keto-enol substructures were filtered by Lipinski's rules, CBP model, and Hypogen model. A total of 12 compounds with similar docking postures were generated by consensus docking. Eventually, four molecules were screened based on the specific binding pattern and affinity of the HPPD inhibitor. The biological evaluation in vivo displayed that compounds III-1 and III-2 exhibited comparable herbicidal activity to isoxaflutole and possessed superior safety on various crops (wheat, rice, sorghum, and maize). The ADMET prediction (absorption, distribution, metabolism, excretion, and toxicity) showed that compound III possessed relatively good toxicological results. This work provides a theoretical basis and valuable reference for the virtual screening and molecular design of novel HPPD inhibition herbicides.
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Affiliation(s)
- Xin-Yu Leng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Qi-Fan Pang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yi-Fan Ma
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Bo-Wen Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Hu S, Wang Y, Wang K, Yang D, Chen L, An Z, Huo J, Zhang J. Design, Synthesis, and Herbicidal Activity of Pyrazole Amide Derivatives as Potential Transketolase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:3334-3341. [PMID: 38346337 DOI: 10.1021/acs.jafc.3c06306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The design and synthesis of new herbicidal active compounds based on a new target are of great significance for the development of new herbicides. Transketolase (TK) plays a key role in the Calvin cycle of plant photosynthesis and has been confirmed as a potential candidate target to develop and discover new herbicides. To obtain compounds with ultraefficient targeting of TK, a series of pyrazole amide derivatives were designed and synthesized through structural optimization for lead compound 4u based on TK as the new target. The bioassay results showed that compounds 6ba and 6bj displayed a highly inhibitory effect with the root inhibition of about 90% against Digitaria sanguinalis (DS) and 80% against Amaranthus retroflexus (AR) and Setaria viridis (SV) by the small cup method, which was better than the positive control mesotrione and nicosulfuron. Furthermore, compounds 6ba and 6bj exhibited an excellent inhibitory effect with the inhibition of about 80% (against DS) and over 80% (against SV) at the dosage of 150 g of active ingredient/ha by the foliar spray method. The TK enzyme activity inhibition test showed that the inhibition effect of target compounds against TK was consistent with the results of herbicidal activities. Also, molecular docking analysis showed that compounds 6ba and 6bj went deep into the active cavity of TK, bound to TK by a strong interaction, and might act on the enzyme TK. Above of all, compounds 6ba and 6bj are promising herbicide lead compounds targeting TK. Hence, they could be developed into more efficient herbicides by further structural optimization.
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Affiliation(s)
- Shiqi Hu
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Yanen Wang
- College of Science, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Kai Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Dongchen Yang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Zexiu An
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Jingqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
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Zhao LX, Hu W, Jiang ZB, Wang JY, Wang K, Gao S, Fu Y, Ye F. Design, Synthesis, and Bioactivity of Novel 2-(Arylformyl)cyclohexane-1,3-dione Derivatives as HPPD Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:17678-17688. [PMID: 37946464 DOI: 10.1021/acs.jafc.3c04651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase inhibitors (Echinochloa crus-galli 1.13.11.27, HPPD) have gained significant popularity as one of the best-selling herbicides worldwide. To identify highly effective HPPD inhibitors, a rational design approach utilizing bioisosterism was employed to create a series of 2-(arylformyl)cyclohexane-1,3-dione derivatives. A total of 29 novel compounds were synthesized and characterized through various techniques, including IR, 1H NMR, 13C NMR, and HRMS. Evaluation of their inhibitory activity against Arabidopsis thaliana HPPD (AtHPPD) revealed that certain derivatives exhibited superior potency compared to mesotrione (IC50 = 0.204 μM). Initial herbicidal activity tests demonstrated that compounds 27 and 28 were comparable to mesotrione in terms of weed control and crop safety, with compound 28 exhibiting enhanced safety in canola crops. Molecular docking analyses indicated that the quinoline rings of compounds 27 and 28 formed more stable π-π interactions with the amino acid residues Phe-360 and Phe-403 in the active cavity of AtHPPD, surpassing the benzene ring of mesotrione. Molecular dynamics simulations and molecular structure comparisons confirmed the robust binding capabilities of compounds 27 and 28 to AtHPPD. This study provides a valuable reference for the development of novel triketone herbicide structures, serving as a blueprint for future advancements in this field.
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Affiliation(s)
- Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Wei Hu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Zi-Bin Jiang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Jia-Yu Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Kui Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Jiang ZB, Gao S, Hu W, Sheng BR, Shi J, Ye F, Fu Y. Design, synthesis and biological activity of novel triketone herbicides containing natural product fragments. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 194:105493. [PMID: 37532319 DOI: 10.1016/j.pestbp.2023.105493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 08/04/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, HPPD) belongs to the non-heme Fe2+ - containing enzyme family and is an important enzyme in tyrosine decomposition. HPPD is crucial to the discovery of novel bleaching herbicides. To develop novel HPPD inhibitor herbicides containing the β-triketone motif, a series of 4-hydroxyl-3-(substituted aryl)-pyran-2-one derivatives were designed using the active fragment splicing method. The title compounds were synthesized and characterized through infrared spectroscopy (IR), 1H nuclear magnetic resonance (1H NMR), 13C nuclear magnetic resonance (13C NMR), and high-resolution mass spectrometry (HRMS). The X-ray diffraction method determined the single crystal structure of I-17. Preliminary bioassay data revealed that several novel compounds, especially I-12 and II-3, showed excellent herbicidal activity against broadleaf and monocotyledonous weeds at a dose of 150 g ai/ha. The results of crop selectivity and carotenoids determination indicated that compound I-12 is more suitable for wheat and cotton fields than mesotrione. Additionally, compound II-3 is safer for soybeans and peanuts than mesotrione. The inhibitory activity of Arabidopsis thaliana HPPD (AtHPPD) verified that compound II-3 showed the most activity with an IC50 value of 0.248 μM, which was superior to that of mesotrione (0.283 μM) in vitro. The binding mode of compound II-3 and AtHPPD was confirmed through molecular docking and molecular dynamics simulations. This study provides insights into the future development of natural and efficient herbicides.
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Affiliation(s)
- Zi-Bin Jiang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Wei Hu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Bo-Ren Sheng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Juan Shi
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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Yang BX, Li ZX, Liu SS, Yang J, Wang PY, Liu HW, Zhou X, Liu LW, Wu ZB, Yang S. Novel cinnamic acid derivatives as a versatile tool for developing agrochemicals for controlling plant virus and bacterial diseases by enhancing plant defense responses. PEST MANAGEMENT SCIENCE 2023; 79:2556-2570. [PMID: 36864774 DOI: 10.1002/ps.7433] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 02/16/2023] [Accepted: 03/02/2023] [Indexed: 06/02/2023]
Abstract
BACKGROUND Plant pathogens have led to large yield and quality losses in crops worldwide. The discovery and study of novel agrochemical alternatives based on the chemical modification of bioactive natural products is a highly efficient approach. Here, two series of novel cinnamic acid derivatives incorporating diverse building blocks with alternative linking patterns were designed and synthesized to identify their antiviral capacity and antibacterial activity. RESULTS The bioassay results demonstrated that most cinnamic acid derivatives had excellent antiviral competence toward tobacco mosaic virus (TMV) in vivo, especially compound A5 (median effective concentration [EC50 ] = 287.7 μg mL-1 ), which had a notable protective effect against TMV when compared with the commercial virucide ribavirin (EC50 = 622.0 μg mL-1 ). In addition, compound A17 had a protective efficiency of 84.3% at 200 μg mL-1 against Xac in plants. Given these outstanding results, the engineered title compounds could be regarded as promising leads for controlling plant virus and bacterial diseases. Preliminary mechanistic studies suggest that compound A5 could enhance the host's defense responses by increasing the activity of defense enzymes and upregulating defense genes, thereby suppressing phytopathogen invasion. CONCLUSION This research lays a foundation for the practical application of cinnamic acid derivatives containing diverse building blocks with alternative linking patterns in pesticide exploration. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Bin-Xin Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Zhen-Xing Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Shuai-Shuai Liu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Jie Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Pei-Yi Wang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Hong-Wu Liu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Xiang Zhou
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Li-Wei Liu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Zhi-Bing Wu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
| | - Song Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang, China
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Lian L, Wang H, Zhang F, Liu W, Lu X, Jin T, Wang J, Gan X, Song B. Cypyrafluone, a 4-Hydroxyphenylpyruvate Dioxygenase Inhibitor to Control Weed in Wheat Fields. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37262424 DOI: 10.1021/acs.jafc.3c01239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
As a bleaching herbicide, cypyrafluone was applied postemergence in wheat fields for annual weed control; especially, this herbicide possesses high efficacy against cool-season grass weed species such as Alopecurus aequalis and Alopecurus japonicus. In this study, the target of action of cypyrafluone on 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibition was confirmed. This herbicide caused severe foliar whitening symptoms at 5-7 days after treatment (DAT) and death of the whole plant within 10 DAT. Significant increases in phytoene content and significant decreases in kinds of carotenoid and chlorophyll pigments were observed. The content of chlorophyll pigments in cypyrafluone-treated Spirodela polyrhiza decreased upon the addition of homogentisic acid (HGA), which indicated that cypyrafluone prevents the HGA production, possibly by inhibiting the catalytic activity of 4-HPPD. Indeed, cypyrafluone strongly inhibited the catalytic activity of Arabidopsis thaliana HPPD produced by Escherichia coli, which was approximately 2 times less effective than mesotrione. In addition, overexpression of Oryza sativa HPPD in rice and A. thaliana both conferred a high tolerance level to cypyrafluone on them. Molecular docking found that cypyrafluone bonded well to the active site of the HPPD and formed a bidentate coordination interaction with the Fe2+ atom, with distances of 2.6 and 2.7 Å between oxygen atoms and the Fe2+ atom and a binding energy of -8.0 kcal mol-1.
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Affiliation(s)
- Lei Lian
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
- Qingdao Kingagroot Compounds Co. Ltd., Qingdao 266000, Shandong, PR China
| | - Hengzhi Wang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Fengwen Zhang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Weitang Liu
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Xingtao Lu
- Qingdao Kingagroot Compounds Co. Ltd., Qingdao 266000, Shandong, PR China
| | - Tao Jin
- Qingdao Kingagroot Compounds Co. Ltd., Qingdao 266000, Shandong, PR China
| | - Jinxin Wang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Xiuhai Gan
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
| | - Baoan Song
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
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9
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Leng XY, Gao S, Ma YF, Zhao LX, Wang M, Ye F, Fu Y. Discovery of novel HPPD inhibitors: Virtual screening, molecular design, structure modification and biological evaluation. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 192:105390. [PMID: 37105629 DOI: 10.1016/j.pestbp.2023.105390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 06/19/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, HPPD, a Fe(II)/α-ketoglutarate dependent oxygenases), is a popular herbicide target. In this work, two pharmacophore models based on common molecular characteristics (HipHop) and receptor-ligand complex (CBP) were generated for virtual screening for HPPD inhibitors. About 1,000,000 molecules containing diketone structure from PubChem were filtered by Lipinski's rules to build a 3D database. Then the database was screened through combining HipHop model, CBP model, ADMET (absorption, distribution, metabolism, excretion and toxicity) prediction and molecular docking. Subsequently, based on the specific binding mode and affinity of HPPD inhibitors, 4 molecules with high -CDOCKER energy, good aqueous solubility and human safety predicative properties values were screened. From the screening results and combined with previous work, three novel HPPD inhibitors were designed and synthesized through fragment splicing and bioisosterism strategies. Compound IV-a exhibited similar inhibition of Arabidopsis thaliana HPPD (AtHPPD) and herbicidal activity as mesotrione. Crop selectivity showed that compound IV-a had better crop safety than mesotrione. Comparing the molecular properties, ADMET and molecular docking studies indicated that compounds IV-a exhibited better properties than mesotrione, which could be further modified as novel HPPD inhibitor herbicides.
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Affiliation(s)
- Xin-Yu Leng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yi-Fan Ma
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Meng Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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10
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Yang D, Wang YE, Chen M, Liu H, Huo J, Zhang J. Discovery of Bis-5-cyclopropylisoxazole-4-carboxamides as Novel Potential 4-Hydroxyphenylpyruvate Dioxygenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:5136-5142. [PMID: 36972477 DOI: 10.1021/acs.jafc.2c08912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27; HPPD) represents a potential target for novel herbicide development. To discover the more promising HPPD inhibitor, we designed and synthesized a series of bis-5-cyclopropylisoxazole-4-carboxamides with different linkers using a multitarget pesticide design strategy. Among them, compounds b9 and b10 displayed excellent herbicidal activities versus Digitaria sanguinalis (DS) and Amaranthus retroflexus (AR) with the inhibition of about 90% at the concentration of 100 mg/L in vitro, which was better than that of isoxaflutole (IFT). Furthermore, compounds b9 and b10 displayed the best inhibitory effect versus DS and AR with the inhibition of about 90 and 85% at 90 g (ai)/ha in the greenhouse, respectively. The structure-activity relationship study showed that the flexible linker (6 carbon atoms) is responsible for increasing their herbicidal activity. The molecular docking analyses showed that compounds b9 and b10 could more closely bind to the active site of HPPD and thus exhibited a better inhibitory effect. Altogether, these results indicated that compounds b9 and b10 could be used as potential herbicide candidates targeting HPPD.
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Affiliation(s)
- Dongchen Yang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Yan-En Wang
- College of Science, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Miaomiao Chen
- Scientific Rescearch Academy, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Haiyan Liu
- College of Science, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jingqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
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11
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Ye BW, Zhao LX, Wang ZW, Shi J, Leng XY, Gao S, Fu Y, Ye F. Design, Synthesis, and Bioactivity of Novel Ester-Substituted Cyclohexenone Derivatives as Safeners. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37017396 DOI: 10.1021/acs.jafc.2c07979] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Tembotrione, a 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor, has been widely used in many types of plants. Tembotrione has been reported for its likelihood of causing injury and plant death to certain corn hybrids. Safeners are co-applied with herbicides to protect certain crops without compromising weed control efficacy. Alternatively, herbicide safeners may effectively improve herbicide selectivity. To address tembotrione-induced Zea mays injury, a series of novel ester-substituted cyclohexenone derivatives were designed using the fragment splicing method. In total, 35 title compounds were synthesized via acylation reactions. All the compounds were characterized using infrared spectroscopy, 1H and 13C nuclear magnetic resonance spectroscopy, and high-resolution mass spectrometry. The configuration of compound II-15 was confirmed using single-crystal X-ray diffraction. The bioactivity assay proved that tembotrione phytotoxicity to maize could be reduced by most title compounds. In particular, compound II-14 exhibited the highest activity against tembotrione. The molecular structure comparisons as well as absorption, distribution, metabolism, excretion, and toxicity predictions demonstrated that compound II-14 exhibited pharmacokinetic properties similar to those of the commercial safener isoxadifen-ethyl. The molecular docking model indicated that compound II-14 could prevent tembotrione from reaching or acting with Z. mays HPPD (PDB: 1SP8). Molecular dynamics simulations showed that compound II-14 maintained satisfactory stability with Z. mays HPPD. This research revealed that ester-substituted cyclohexenone derivatives can be developed as potential candidates for discovering novel herbicide safeners in the future.
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Affiliation(s)
- Bo-Wen Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Zi-Wei Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Juan Shi
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Xin-Yu Leng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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12
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Lin HY, Dong J, Dong J, Yang WC, Yang GF. Insights into 4-hydroxyphenylpyruvate dioxygenase-inhibitor interactions from comparative structural biology. Trends Biochem Sci 2023; 48:568-584. [PMID: 36959016 DOI: 10.1016/j.tibs.2023.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 02/09/2023] [Accepted: 02/24/2023] [Indexed: 03/25/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (HPPD) plays a key role in tyrosine metabolism and has been identified as a promising target for herbicide and drug discovery. The structures of HPPD complexed with different types of inhibitors have been determined previously. We summarize the structures of HPPD complexed with structurally diverse molecules, including inhibitors, natural products, substrates, and catalytic intermediates; from these structures, the detailed inhibitory mechanisms of different inhibitors were analyzed and compared, and the key structural factors determining the slow-binding behavior of inhibitors were identified. Further, we propose four subpockets that accommodate different inhibitor substructures. We believe that these analyses will facilitate in-depth understanding of the enzymatic reaction mechanism and enable the design of new inhibitors with higher potency and selectivity.
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Affiliation(s)
- Hong-Yan Lin
- National Key Laboratory of Green Pesticide, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, PR China
| | - Jin Dong
- National Key Laboratory of Green Pesticide, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, PR China
| | - Jiangqing Dong
- National Key Laboratory of Green Pesticide, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, PR China
| | - Wen-Chao Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, PR China
| | - Guang-Fu Yang
- National Key Laboratory of Green Pesticide, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan 430079, PR China.
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13
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Zeng H, Zhang W, Wang Z, Gan X. Discovery of Novel Pyrazole Derivatives with Improved Crop Safety as 4-Hydroxyphenylpyruvate Dioxygenase-Targeted Herbicides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3950-3959. [PMID: 36848139 DOI: 10.1021/acs.jafc.2c07551] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
As one of the essential herbicide targets, 4-hydroxyphenylpyruvate dioxygenase (HPPD) has recently been typically used to produce potent new herbicides. In continuation with the previous work, several pyrazole derivatives comprising a benzoyl scaffold were designed and synthesized, and their inhibitory effects on Arabidopsis thaliana hydroxyphenylpyruvate dioxygenase (AtHPPD) and herbicidal activities were comprehensively evaluated in this study. Compound Z9 showed top-rank inhibitory activity to AtHPPD with an half-maximal inhibitory concentration (IC50) value of 0.05 μM, which was superior to topramezone (1.33 μM) and mesotrione (1.76 μM). Compound Z21 exhibited superior preemergence inhibitory activity against Echinochloa crusgalli, with stem and root inhibition rates of 44.3 and 69.6%, respectively, compared to topramezone (16.0 and 53.0%) and mesotrione (12.8 and 41.7%). Compounds Z5, Z15, Z20, and Z21 showed excellent postemergence herbicidal activities at a dosage of 150 g ai/ha, along with distinct bleaching symptoms and higher crop safety than topramezone and mesotrione, and they all were safe for maize, cotton, and wheat with injury rates of 0 or 10%. In addition, the molecular docking analysis also revealed that these compounds formed hydrophobic π-π interactions with Phe360 and Phe403 to AtHPPD. This study suggests that pyrazole derivatives containing a benzoyl scaffold could be used as new HPPD inhibitors to develop pre- and postemergence herbicides and be applied to additional crop fields.
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Affiliation(s)
- Huanan Zeng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Wei Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Zhengxing Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Xiuhai Gan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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14
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In silico approach of novel HPPD/PDS dual target inhibitors by pharmacophore, AILDE and molecular docking. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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15
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Wang YE, Yang D, Ma C, Hu S, Huo J, Chen L, Kang Z, Mao J, Zhang J. Design, Synthesis, and Herbicidal Activity of Naphthalimide-Aroyl Hybrids as Potent Transketolase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12819-12829. [PMID: 36173029 DOI: 10.1021/acs.jafc.2c04533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Transketolase (TK) was identified as a new target for the development of novel herbicides. In this study, a series of naphthalimide-aroyl hybrids were designed and prepared based on TK as a new target and tested for their herbicidal activities. In vitro bioassay showed that compounds 4c and 4w exhibited stronger inhibitory effects against Digitaria sanguinalis (DS) and Amaranthus retroflexus (AR) with the inhibition over 90% at 200 mg/L and around 80% at 100 mg/L. Also, compounds 4c and 4w exhibited excellent postemergence herbicidal activity against DS and AR with the inhibition around 90% at 90 g [active ingredient (ai)]/ha and 80% at 50 g (ai)/ha in the greenhouse, which was comparable with the activity of mesotrione. The fluorescent quenching experiments of At TK revealed the occurrence of electron transfer from compound 4w to At TK and the formation of a strong exciplex between them. Molecular docking analyses further showed that compounds 4w exhibited profound affinity with At TK through the interaction with the amino acids in the active site, which results in its strong inhibitory activities against TK. These findings demonstrated that compound 4w is potentially a lead candidate for novel herbicides targeting TK.
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Affiliation(s)
- Yan-En Wang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
- College of Science, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Dongchen Yang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Chujian Ma
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Shiqi Hu
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jingqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Zhanhai Kang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Jianyou Mao
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding 071001, P. R. China
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16
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Discovery of novel HPPD inhibitors based on a combination strategy of pharmacophore, consensus docking and molecular dynamics. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Computer-Aided and AILDE Approaches to Design Novel 4-Hydroxyphenylpyruvate Dioxygenase Inhibitors. Int J Mol Sci 2022; 23:ijms23147822. [PMID: 35887168 PMCID: PMC9320391 DOI: 10.3390/ijms23147822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 07/12/2022] [Accepted: 07/14/2022] [Indexed: 01/19/2023] Open
Abstract
4-Hydroxyphenylpyruvate dioxygenase (HPPD) is a pivotal enzyme in tocopherol and plastoquinone synthesis and a potential target for novel herbicides. Thirty-five pyridine derivatives were selected to establish a Topomer comparative molecular field analysis (Topomer CoMFA) model to obtain correlation information between HPPD inhibitory activity and the molecular structure. A credible and predictive Topomer CoMFA model was established by "split in two R-groups" cutting methods and fragment combinations (q2 = 0.703, r2 = 0.957, ONC = 6). The established model was used to screen out more active compounds and was optimized through the auto in silico ligand directing evolution (AILDE) platform to obtain potential HPPD inhibitors. Twenty-two new compounds with theoretically good HPPD inhibition were obtained by combining the high-activity contribution substituents in the existing molecules with the R-group search via Topomer search. Molecular docking results revealed that most of the 22 fresh compounds could form stable π-π interactions. The absorption, distribution, metabolism, excretion and toxicity (ADMET) prediction and drug-like properties made 9 compounds potential HPPD inhibitors. Molecular dynamics simulation indicated that Compounds Y12 and Y14 showed good root mean square deviation (RMSD) and root mean square fluctuation (RMSF) values and stability. According to the AILDE online verification, 5 new compounds with potential HPPD inhibition were discovered as HPPD inhibitor candidates. This study provides beneficial insights for subsequent HPPD inhibitor design.
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18
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Zeng H, Zhang W, Wang Z, Geng W, Feng G, Gan X. Novel Pyrazole Amides as Potential 4-Hydroxyphenylpyruvate Dioxygenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:7400-7411. [PMID: 35687877 DOI: 10.1021/acs.jafc.2c02123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (HPPD) is an important target for the development of new herbicides. HPPD inhibitors can hinder photosynthesis and induce weed death with bleaching symptoms. To explore the novel skeleton of HPPD inhibitors, a series of novel pyrazole amide derivatives were synthesized and evaluated for their inhibitory effects on Arabidopsis thaliana HPPD (AtHPPD) and herbicidal activities. Some compounds had excellent inhibitory activities against AtHPPD. Among them, compound B5 displayed top-rank inhibitory activity against AtHPPD with an IC50 value of 0.04 μM, which was obviously superior to that of topramezone (IC50 value of 0.11 μM). Furthermore, compounds B2 and B7 had 100% herbicidal activities in Petri dish assays against Portulaca oleracea and Amaranthus tricolor at 100 μg/mL. In particular, compound B7 not only possessed strong AtHPPD inhibitory activity but also exhibited significant preemergence herbicidal activity. However, compound B7 was completely harmless to soybean, cotton, and wheat. In addition, the molecular docking and microscale thermophoresis measurement experiment verified that compounds can bind well with AtHPPD via π-π interactions. The present work provides a new approach for the rational design of more effective HPPD inhibitors, and pyrazole amides could be used as useful substructures for the development of new HPPD inhibitors and preemergence herbicidal agents.
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Affiliation(s)
- Huanan Zeng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Wei Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Zhengxing Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Wang Geng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Gang Feng
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
| | - Xiuhai Gan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Huaxi District, Guiyang 550025, China
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19
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Governa P, Bernardini G, Braconi D, Manetti F, Santucci A, Petricci E. Survey on the Recent Advances in 4-Hydroxyphenylpyruvate Dioxygenase (HPPD) Inhibition by Diketone and Triketone Derivatives and Congeneric Compounds: Structural Analysis of HPPD/Inhibitor Complexes and Structure-Activity Relationship Considerations. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:6963-6981. [PMID: 35652597 DOI: 10.1021/acs.jafc.2c02010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The serendipitous discovery of the HPPD inhibitors from allelopathic plants opened the way for searching new and effective herbicidal agents by application of classical hit-to-lead optimization approaches. A plethora of active and selective compounds were discovered that belong to three major classes of cyclohexane-based triketones, pyrazole-based diketones, and diketonitriles. In addition, to enhance inhibitory constant and herbicidal activity, many efforts were also made to gain broader weed control, crop safety, and eventual agricultural applicability. Moreover, HPPD inhibitors emerged as therapeutic agents for inherited and metabolic human diseases as well as vector-selective insecticides in the control of hematophagous arthropods. Given the large set of experimental data available, structure-activity relationship analysis could be used to derive suggestions for next generation optimized compounds.
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Affiliation(s)
- Paolo Governa
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Giulia Bernardini
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Daniela Braconi
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Fabrizio Manetti
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Annalisa Santucci
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Elena Petricci
- Department of Biotechnology, Chemistry and Pharmacy - Department of Excellence 2018-2022, University of Siena, via Aldo Moro 2, I-53100 Siena, Italy
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Wang JY, Gao S, Shi J, Cao HF, Ye T, Yue ML, Ye F, Fu Y. Virtual screening based on pharmacophore model for developing novel HPPD inhibitors. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 184:105109. [PMID: 35715048 DOI: 10.1016/j.pestbp.2022.105109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 04/17/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
4-Hydroxyphenylpyruvate dioxygenase (HPPD) is an important target for herbicide design. A multilayered virtual screening workflow was constructed by combining two pharmacophore models based on ligand and crystal complexes, molecular docking, molecular dynamics (MD), and biological activity determination to identify novel small-molecule inhibitors of HPPD. About 110, 000 compounds of Bailingwei and traditional Chinese medicine databases were screened. Of these, 333 were analyzed through docking experiments. Five compounds were selected by analyzing the binding pattern of inhibitors with amino acid residues in the active pocket. All five compounds could produce stable coordination with cobalt ion, and form favorable π-π interactions. MD simulation demonstrated that Phe381 and Phe424 made large contributions to the strength of binding. The enzyme activity experiment verified that compound-139 displayed excellent potency against AtHPPD (IC50 = 0.742 μM), however, compound-5222 had inhibitory effect on human HPPD (IC50 = 6 nM). Compound-139 exhibited herbicidal activity to some extent on different gramineous weeds. This work provided a strong insight into the design and development of novel HPPD inhibitor using in silico techniques.
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Affiliation(s)
- Jia-Yu Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Juan Shi
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Hai-Feng Cao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Tong Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ming-Li Yue
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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21
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Zhao LX, Peng JF, Liu FY, Zou YL, Gao S, Fu Y, Ye F. Discovery of novel phenoxypyridine as promising protoporphyrinogen IX oxidase inhibitors. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 184:105102. [PMID: 35715041 DOI: 10.1016/j.pestbp.2022.105102] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/30/2022] [Accepted: 04/15/2022] [Indexed: 06/15/2023]
Abstract
Protoporphyrinogen oxidase (PPO, EC 1.3.3.4) is a significant target for the discovery of novel bleaching herbicides. Starting from the active fragments of several known commercial herbicides, a series of PPO inhibitors with diphenyl ether scaffolds were designed and synthesized by substructure splicing and bioisosterism methods. The greenhouse herbicidal activity and the PPO inhibitory activity in vitro were measured. The results showed that the novel synthesized compounds have good PPO inhibitory activity, and the IC50 value against corn PPO ranges from 0.032 ± 0.008 mg/L to 3.245 ± 0.247 mg/L. Among all target compounds, compound P2 showed the best herbicidal activity, with a half inhibitory concentration (IC50) of 0.032 ± 0.008 mg/L. In addition, the molecular docking results showed that the benzene ring part of compound P2 can form a π-π stacking with PHE-392, and the trifluoromethyl group and ARG-98 form two hydrogen bonds. Crop safety experiments and cumulative concentration analysis experiments indicated that compound P2 can be used for weed control in rice, wheat, soybean and corn. Therefore, compound P2 can be selected to develop potential lead compounds for novel PPO inhibitors.
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Affiliation(s)
- Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Jian-Feng Peng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Feng-Yi Liu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yue-Li Zou
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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22
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Hu W, Gao S, Zhao LX, Guo KL, Wang JY, Gao YC, Shao XX, Fu Y, Ye F. Design, synthesis and biological activity of novel triketone-containing quinoxaline as HPPD inhibitor. PEST MANAGEMENT SCIENCE 2022; 78:938-946. [PMID: 34719096 DOI: 10.1002/ps.6703] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/11/2021] [Accepted: 10/30/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND 4-Hydroxyphenyl pyruvate dioxygenase (EC 1.13.11.27, HPPD) is one of the important target enzymes used to address the issue of weed control. HPPD-inhibiting herbicides can reduce the carotenoid content in plants and hinder photosynthesis, eventually causing albinism and death. Exploring novel HPPD-inhibiting herbicides is a significant direction in pesticide research. In the process of exploring new high-efficiency HPPD inhibitors, a series of novel quinoxaline derivatives were designed and synthesized using an active fragment splicing strategy. RESULTS The title compounds were unambiguously characterized by infrared, 1 H NMR, 13 C NMR, and high-resolution mass spectroscopy. The results of the in vitro tests indicated that the majority of the title compounds showed potent inhibition of Arabidopsis thaliana HPPD (AtHPPD). Preliminary bioevaluation results revealed that a number of novel compounds displayed better or excellent herbicidal activity against broadleaf and monocotyledonous weeds. Compound III-5 showed herbicidal effects comparable to those of mesotrione at a rate of 150 g of active ingredient (ai)/ha for post-emergence application. The results of molecular dynamics verified that compound III-5 had a more stable protein-binding ability. Molecular docking results showed that compound III-5 and mesotrione shared homologous interplay with the surrounding residues. In addition, the enlarged aromatic ring system adds more force, and the hydrogen bond formed can enhance the synergy with π-π stacking. CONCLUSIONS The present work indicates that compound III-5 may be a potential lead structure for the development of new HPPD inhibitors.
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Affiliation(s)
- Wei Hu
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Shuang Gao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Li-Xia Zhao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Ke-Liang Guo
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Jia-Yu Wang
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Ying-Chao Gao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Xin-Xin Shao
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Ying Fu
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
| | - Fei Ye
- Department of Applied Chemistry, College of Science, Northeast Agricultural University, Harbin, People's Republic of China
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23
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Zhao LX, Peng JF, Liu FY, Zou YL, Gao S, Fu Y, Ye F. Design, Synthesis, and Herbicidal Activity of Diphenyl Ether Derivatives Containing a Five-Membered Heterocycle. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:1003-1018. [PMID: 35040327 DOI: 10.1021/acs.jafc.1c05210] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Protoporphyrinogen oxidase (PPO, EC 1.3.3.4) is an important target for discovering novel herbicides, and it causes bleaching symptoms by inhibiting the synthesis of chlorophyll and heme. In this study, the active fragments of several commercial herbicides were joined by substructure splicing and bioisosterism, and a series of novel diphenyl ether derivatives containing five-membered heterocycles were synthesized. The greenhouse herbicidal activity and the PPO inhibitory activity in vitro were discussed in detail. The results showed that most compounds had good PPO inhibitory activity, and target compounds containing trifluoromethyl groups tended to have higher activity. Among them, compound G4 showed the best inhibitory activity, with a half-maximal inhibitory concentration (IC50) of 0.0468 μmol/L, which was approximately 3 times better than that of oxyfluorfen (IC50 = 0.150 μmol/L). In addition, molecular docking indicated that compound G4 formed obvious π-π stacking interactions and hydrogen bond interactions with PHE-392 and ARG-98, respectively. Remarkably, compound G4 had good safety for corn, wheat, rice, and soybean, and the cumulative concentration in crops was lower than that of oxyfluorfen. Therefore, compound G4 can be used to develop potential lead compounds for novel PPO inhibitors.
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Affiliation(s)
- Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Jian-Feng Peng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Feng-Yi Liu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yue-Li Zou
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Song HM, Zhao LX, Zhang SQ, Ye T, Fu Y, Ye F. Design, Synthesis, Structure-Activity Relationship, Molecular Docking, and Herbicidal Evaluation of 2-Cinnamoyl-3-Hydroxycyclohex-2-en-1-one Derivatives as Novel 4-Hydroxyphenylpyruvate Dioxygenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:12621-12633. [PMID: 34677970 DOI: 10.1021/acs.jafc.1c04621] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Cinnamic acid, isolated from cinnamon bark, is a natural product with excellent bioactivity, and it effectively binds with cyclohexanedione to form novel 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitors. According to the active sub-structure combination principle, a series of novel 3-hydroxy-2-cinnamoyl-2-en-1-one derivatives were designed and synthesized. The title compounds were characterized by infrared, 1H NMR, 13C NMR, and HRMS. The in vitro inhibitory activity of AtHPPD verified that compound II-13 showed the most activity with a half-maximal inhibitory concentration (IC50) value of 0.180 μM, which was superior to that of mesotrione (0.206 μM) in vitro. The preliminary herbicidal activity tests demonstrated that some compounds had good herbicidal activity especially compound II-13 at a concentration of 150 g ai/ha. The binding mode of AtHPPD through molecular docking indicated that two oxygens of compounds II-13 formed bidentate interactions with metal ions, and the benzene ring formed π-π accumulation effects with Phe-381 and Phe-424. The results of molecular dynamics simulations showed that compound II-13 exhibited a more stable binding ability with AtHPPD than mesotrione. This study provided insights into the development of natural and efficient herbicides in the future.
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Affiliation(s)
- Hao-Min Song
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuai-Qi Zhang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Tong Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Wang YE, Yang D, Huo J, Chen L, Kang Z, Mao J, Zhang J. Design, Synthesis, and Herbicidal Activity of Thioether Containing 1,2,4-Triazole Schiff Bases as Transketolase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11773-11780. [PMID: 34587736 DOI: 10.1021/acs.jafc.1c01804] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Transketolase (TK) represents a potential target for novel herbicide development. To discover novel TK inhibitors with potency against resistant weeds, 36 thioether compounds containing 1,2,4-triazole Schiff bases were designed and synthesized for herbicidal activity evaluation. The results demonstrated that compounds 5av and 5aw provided excellent weed control with inhibition of over 90% against the tested weeds, even at concentrations as low as 100 mg/L in vitro. In addition, compounds 5av and 5aw exhibited higher postemergence herbicidal activity than all of the positive controls against the tested weeds at 50-90 g [active ingredient (ai)]/ha in a greenhouse, while being safe for crops of maize and wheat at 90 g (ai)/ha. Fluorescent binding experiments of At TK indicated that compounds 5av and 5aw had strong TK inhibitory activity and could tightly bind with the enzyme At TK. Also, molecular docking analyses revealed that the structures of compounds 5av and 5aw were suitable for TK inhibitory activity. Taken together, these results suggested that compounds 5av and 5aw were promising herbicide candidates for weed control in wheat and maize fields targeting TK.
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Affiliation(s)
- Yan-En Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
- College of Science, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Dongchen Yang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Jingqian Huo
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Lai Chen
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Zhanhai Kang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
| | - Jianyou Mao
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, Jiangsu 211816, People's Republic of China
| | - Jinlin Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, Hebei 071001, People's Republic of China
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Zhao LX, Wang ZX, Peng JF, Zou YL, Hui YZ, Chen YZ, Gao S, Fu Y, Ye F. Design, synthesis, and herbicidal activity of novel phenoxypyridine derivatives containing natural product coumarin. PEST MANAGEMENT SCIENCE 2021; 77:4785-4798. [PMID: 34161678 DOI: 10.1002/ps.6523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/30/2021] [Accepted: 06/23/2021] [Indexed: 05/26/2023]
Abstract
BACKGROUND In recent years, protoporphyrinogen oxidase (PPO, EC 1.3.3.4) inhibitors have been widely studied as important agricultural herbicides. Our research focused on the design and synthesis of novel PPO inhibitor herbicides, through linking of a diphenylether pyridine bioisostere structure to substituted coumarins, which aims to enhance environmental and crop safety while retaining high efficacy. RESULTS A total of 21 compounds were synthesized via acylation reactions and all compounds were characterized using infrared, 1 H NMR, 13 C NMR, and high-resolution mass spectra. The respective configurations of compounds IV-6 and IV-12 were also confirmed using single crystal X-ray diffraction. The bioassay results showed that the title compounds displayed notable herbicidal activity, particularly compound IV-6 which displayed better herbicidal activity in greenhouse and field experiments, crop selectivity and safety for cotton and soybean compared with the commercial herbicide oxyfluorfen. CONCLUSION The work revealed that compound IV-6 deserves further attention as a candidate structure for a novel and safe herbicide. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Zhi-Xin Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Jian-Feng Peng
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Yue-Li Zou
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Yong-Zhuo Hui
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Yong-Zheng Chen
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
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Zhao LX, Wang ZX, Zou YL, Gao S, Fu Y, Ye F. Phenoxypyridine derivatives containing natural product coumarins with allelopathy as novel and promising proporphyrin IX oxidase-inhibiting herbicides: Design, synthesis and biological activity study. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 177:104897. [PMID: 34301359 DOI: 10.1016/j.pestbp.2021.104897] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/17/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
To seek novel and safe protoporphyrinogen oxidase (PPO, EC 1.3.3.4) inhibitors with excellent herbicidal activity. A series of novel phenoxypyridine derivatives containing natural product coumarins with allelopathy were designed and synthesized based on bioisosterism and active subunit combination in this research. Compounds W3.1 and W3.4, with the half-maximal inhibitory concentration (IC50) value of 0.02653 mg/L and 0.01937 mg/L, respectively, displayed excellent herbicidal activity in greenhouse. Their herbicidal activity was similar to commercial herbicide oxyfluorfen (IC50 = 0.04943 mg/L). The best field inhibitory effect of compounds W3.1 and W3.4 recorded was at doses of 450 g ai/ha and 300 g ai/ha, respectively. Compound W3.4 had the best herbicidal activity among all the target compounds in this paper. Molecular docking analysis revealed that compounds W3.1 and W3.4 could form a hydrogen bonds with the amino acid AGR-98 and a π-π superposition with the amino acid PHE-398, respectively, which was similar to the oxyfluorfen. The crop selectivity tests results indicated that maize, cotton and soybean showed high tolerance to compound W3.4. Compound W3.4 reduced the Ca and Cb contents of wheat and rice, but had less effect on maize, cotton and soybean. Selectivity of compound W3.4 in maize, cotton and soybean were appeared to be due to reduced absorption of the herbicide compared to wheat and rice. Compound W3.4 deserves further attention as a candidate structure for new herbicides.
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Affiliation(s)
- Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Zhi-Xin Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yue-Li Zou
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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Wang H, Wang L, Zhang X, Bai S, Jin T, Liu W, Wang J. Unravelling Phytotoxicity and Mode of Action of Tripyrasulfone, a Novel Herbicide. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:7168-7177. [PMID: 34152147 DOI: 10.1021/acs.jafc.1c01294] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Tripyrasulfone is a novel herbicide post-emergence applied in paddy fields. In this study, tripyrasulfone phytotoxicity and its mode of action were investigated. Within 3-7 days after treatment (DAT), tripyrasulfone caused strong bleaching symptoms on newly developed leaves of Echinochloa crus-galli followed by necrosis prior to death within 14 DAT. By investigating pigment composition, photosynthetic activity and energy dissipation of E. crus-galli treated with tripyrasulfone, the accumulation of phytoene and significant decreases in total carotenoids were observed; the photosystem II complex (PSII) reaction center and PSII-PSI electron transport chain were damaged; and the non-photochemical energy quenching and reactive oxygen species were significantly increased. Based on the reversion of bleaching symptoms in treated Spirodela polyrrhiza by the addition of homogentisic acid, it was hypothesized that tripyrasulfone blocks the biosynthesis of HGA, possibly by the inhibition of 4-hydroxyphenylpyruvate dioxygenase (HPPD). However, based on its chemical structure, tripyrasulfone may tend to be hydrolyzed in plants. Indeed, the hydrolyzed tripyrasulfone (HDT) inhibited the activity of HPPD from Arabidopsis thaliana produced by Escherichia coli, which was approximately 6 times less effective than mesotrione. Molecular docking showed that the HDT formed a stable bidentate interaction with the active center Fe2+ chelation of A. thaliana HPPD.
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Affiliation(s)
- Hengzhi Wang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Lipeng Wang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Xiaolin Zhang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Shuang Bai
- College of Plant Health and Medicine, Qingdao Agricultural University, Qingdao 266000, PR China
| | - Tao Jin
- Qingdao Kingagroot Chemical Compound Co., Ltd., Qingdao 266000, PR China
| | - Weitang Liu
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
| | - Jinxin Wang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, Shandong, PR China
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Gao S, Jiang J, Li X, Ye F, Fu Y, Zhao L. Electrospun Polymer-Free Nanofibers Incorporating Hydroxypropyl-β-cyclodextrin/Difenoconazole via Supramolecular Assembly for Antifungal Activity. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5871-5881. [PMID: 34013730 DOI: 10.1021/acs.jafc.1c01351] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, flexible and self-standing hydroxypropyl-β-cyclodextrin/difenoconazole inclusion complex (HPβCD/DZ-IC) nanofibers were prepared by polymer-free electrospinning, which exhibited potential to be a new fast-dissolving pesticide formulation. Scanning electron microscopy and optical microscopy were applied to evaluate the morphology of nanofibers, which showed that the resulting HPβCD/DZ-IC nanofibers were bead-free and uniform. In addition, the proton nuclear magnetic resonance (1H NMR) spectrum suggested a stoichiometric ratio of 1:0.9 (HPβCD/DZ). Other characterization methods, such as UV-vis absorption, fluorescence spectroscopy, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA), were applied in this study. On the one hand, UV-vis absorption, fluorescence spectroscopy, FT-IR, XRD, and TGA provided useful information for the successful formation of an inclusion complex; on the other hand, the results of TGA indicated the thermal stability of DZ was enhanced after the formation of inclusion complexes. Besides, the phase solubility test could explain the increased water solubility of the nanofibers of inclusion complexes formed by DZ and HPβCD. The results of molecular docking studies demonstrated the most favorable binding interactions when HPβCD combined with DZ. The dissolution test and the antifungal performance test exhibited the characteristics of fast dissolution and the excellent antifungal performance of HPβCD/DZ-IC nanofibers, respectively.
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Affiliation(s)
- Shuang Gao
- Department of Chemistry, Northeast Agricultural University, Harbin 150030, China
| | - Jingyu Jiang
- Department of Chemistry, Northeast Agricultural University, Harbin 150030, China
| | - Xiaoming Li
- Department of Chemistry, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Chemistry, Northeast Agricultural University, Harbin 150030, China
| | - Lixia Zhao
- Department of Chemistry, Northeast Agricultural University, Harbin 150030, China
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Fu Y, Wang M, Zhao LX, Zhang SQ, Liu YX, Guo YY, Zhang D, Gao S, Ye F. Design, synthesis, herbicidal activity and CoMFA of aryl-formyl piperidinone HPPD inhibitors. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 174:104811. [PMID: 33838713 DOI: 10.1016/j.pestbp.2021.104811] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Isoxazole, nicotinic acid and benzoic acid are important components in many natural products and useful synthons to build macrostructures having valuable biological activities. In continuation of our effort to discover 4-hydroxyphenylpyruvate dioxygenase (HPPD, EC 1.13.11.27) inhibitors and search for active fragments from natural products, a series of substituted aryl-formyl piperidinone derivatives with natural product fragments was rationally designed, synthesized and tested for their herbicidal activity. Compound I-9 was considered the most effective candidate with an IC50 value of 0.260 μM. The molecular docking results showed that the triketone group of compound I-9 forms a bidentate complex with a metal ion, and the benzene ring interacted with Phe424 and Phe381 via π-π stacking, which was similar to the mechanisms of mesotrione. The present work indicates that compound I-9 may serve as a potential lead compound for further development of green HPPD inhibitors.
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Affiliation(s)
- Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Meng Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuai-Qi Zhang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yong-Xuan Liu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - You-Yuan Guo
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Dong Zhang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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An environmentally safe formulation with enhanced solubility and fungicidal activity: Self-assembly and characterization of Difenoconazole-β-CD inclusion complex. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114874] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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32
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Wang ZW, Zhao LX, Ma P, Ye T, Fu Y, Ye F. Fragments recombination, design, synthesis, safener activity and CoMFA model of novel substituted dichloroacetylphenyl sulfonamide derivatives. PEST MANAGEMENT SCIENCE 2021; 77:1724-1738. [PMID: 33236407 DOI: 10.1002/ps.6193] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/12/2020] [Accepted: 11/25/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Isoxaflutole (IXF), as a kind of 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor, has been widely used in many kinds of plants. IXF can cause injury in corn including leaf and stem bleaching, plant height reduction or stunting, and reduced crop stand. Safeners are co-applied with herbicides to protect crops without compromising weed control efficacy. With the ultimate goal of addressing Zea mays injury caused by IXF, a series of novel substituted dichloroacetylphenyl sulfonamide derivatives was designed on the basis of scaffold hopping and active substructure splicing. RESULTS A total of 35 compounds were synthesized via acylation reactions. All the compounds were characterized by infrared (IR), proton and carbon-13 nuclear magnetic resonance (1 H-NMR and 13 C-NMR), and high-resolution mass spectrometry (HRMS). The configuration of compound II-1 was confirmed by single crystal X-ray diffraction. The bioassay results showed that all the title compounds displayed remarkable protection against IXF via improved content of carotenoid. Especially compound II-1 which possessed better glutathione transferases (GSTs) activity and carotenoid content than the contrast safener cyprosulfamide (CSA). All the satisfied parameters suggested that the Comparative Molecular Field Analysis (CoMFA) model was reliable and stable [with a cross-validated coefficient (q2 ) = 0.527, r2 = 0.995, r2 pred = 0.931]. The molecular docking simulation indicated that the compound II-1 and CSA could compete with diketonitrile (DKN) at the active site of HPPD, which is a hydrolyzed product of IXF in plants, causing the herbicide to be ineffective. CONCLUSIONS The present work revealed that the compound II-1 deserves further attention as the candidate structure of safeners. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Zi-Wei Wang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Li-Xia Zhao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Peng Ma
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Tong Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
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Huang H, Zhang JQ, Liu JM, Wang MM, Shu L, Yan YL, Zhan XH, Wang P, Huan XT, Zhang DY. Discovery of novel benzofuran scaffold as 4-hydroxyphenylpyruvate dioxygenase inhibitors. PEST MANAGEMENT SCIENCE 2021; 77:1409-1421. [PMID: 33128494 DOI: 10.1002/ps.6159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 10/19/2020] [Accepted: 10/31/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND 4-Hydroxyphenylpyruvate dioxygenase (HPPD) plays an important role in addressing the issue of plant protection research. This study sheds new light on the differences in molecular scaffold from commercialized HPPD inhibitors. RESULTS The compounds A1-A18 and B1-B27 were synthesized for in vitro and greenhouse experiments. The greenhouse experiment data indicated that compounds B14 and B18 displayed excellent herbicidal activity, which was higher compared to that of mesotrione. In vitro testing indicated that the compounds were HPPD inhibitors. Moreover, molecular simulation results show that the compounds B14, B18, and mesotrione shared similar interplay with surrounding residues, which led to a perfect interaction with the active site of Arabidopsis thaliana HPPD. Based on crop selectivity results, compounds B14 and B18 were selected for maize studies (injury≤10%), indicating its potential for weed control in maize fields. CONCLUSION These results showed that the pyrazole-benzofuran structure could be used as possible lead compounds for the development of HPPD inhibitors. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Hao Huang
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Jian-Qiu Zhang
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Jian-Min Liu
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Man-Man Wang
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Lei Shu
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Yi-le Yan
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Xiao-Hang Zhan
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Ping Wang
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Xue-Ting Huan
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Da-Yong Zhang
- School of Sciences, China Pharmaceutical University, Nanjing, China
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Li L, Gao S, Yang L, Liu YL, Li P, Ye F, Fu Y. Cobalt (II) complex as a fluorescent sensing platform for the selective and sensitive detection of triketone HPPD inhibitors. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124015. [PMID: 33039827 DOI: 10.1016/j.jhazmat.2020.124015] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/26/2020] [Accepted: 09/12/2020] [Indexed: 05/28/2023]
Abstract
4-Hydroxyphenylpyruvatedioxygenase (HPPD) is a Fe(II)/Co(II)-dependent enzyme which has become one of the most effective herbicide targets. HPPD inhibitors have been developed as efficient herbicides for resistant weed control. Developing a method for efficient and rapid HPPD inhibitors detection is still challenging. N-n-butyl-4-methylhydrazinecarbothioamide-1,8-naphthalimide (NMN) was synthesized and used to detect Co2+ efficiently with the limit of detection (LOD) of 7.82 nM with a turn-on fluorescence. Herein a novel fluorescent complex, NMN‒Co2+ was employed to determine HPPD inhibitors which performed a turn-off effect in the sensing process based on the competitive coordination between the probe and HPPD with Co2+. The LODs for three commercial triketone HPPD inhibitors (mesotrione, tembotrione and NTBC) were 6.60 nM, 7.37 nM and 10.22 nM with good sensitivity and selectivity. Furthermore, the present probe has potentials to quantitatively detect mesotrione and tembotrione in real samples.
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Affiliation(s)
- Lu Li
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Shuang Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Liu Yang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Yu-Long Liu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ping Li
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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Gao S, Liu Y, Jiang J, Li X, Ye F, Fu Y, Zhao L. Thiram/hydroxypropyl-β-cyclodextrin inclusion complex electrospun nanofibers for a fast dissolving water-based drug delivery system. Colloids Surf B Biointerfaces 2021; 201:111625. [PMID: 33621750 DOI: 10.1016/j.colsurfb.2021.111625] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 01/19/2023]
Abstract
The electrospinning of thiram/hydroxypropyl-β-cyclodextrin inclusion complex nanofiber (thiram/HPβCD-IC-NF) was produced for establishing a quick dissolving water-based drug delivery system. As a dithiocarbamate broad-spectrum fungicide, thiram is insoluble in water. High-concentration HPβCD solutions (180 %, w/v) were applied in thiram/HPβCD systems to implement electrospinning with no extra polymer matrix added. The formation of thiram/HPβCD-IC-NF was identified by Fourier transform infrared spectroscopy, X-ray diffraction as well as nuclear magnetic resonance. Phase solubility study proved HPβCD played a huge role in the improvement in solubility of thiram, and thiram/HPβCD-IC-NF showed an excellent dissolution rate. Scanning electron microscopy was used to examine the configuration of surface of thiram/HPβCD-IC-NF, which exhibited that thiram/HPβCD-IC-NF was uniform and beadless. In addition, thiram/HPβCD-IC-NF exhibited better antifungal activity and thermal stability than pure thiram. In summary, thiram/HPβCD-IC-NF drug delivery system contributed to water solubility, thermal stability and antifungal activity of thiram. It could provide a new idea for the development of new formulations of rapidly dissolving green pesticides, and made efforts to promote the sustainable development of agriculture.
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Affiliation(s)
- Shuang Gao
- Department of Chemistry, Northeast Agricultural University, Harbin, 150030, China
| | - Yanyan Liu
- Department of Chemistry, Northeast Agricultural University, Harbin, 150030, China
| | - Jingyu Jiang
- Department of Chemistry, Northeast Agricultural University, Harbin, 150030, China
| | - Xiaoming Li
- Department of Chemistry, Northeast Agricultural University, Harbin, 150030, China
| | - Fei Ye
- Department of Chemistry, Northeast Agricultural University, Harbin, 150030, China.
| | - Ying Fu
- Department of Chemistry, Northeast Agricultural University, Harbin, 150030, China.
| | - Lixia Zhao
- Department of Chemistry, Northeast Agricultural University, Harbin, 150030, China
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Asha RN, Rahini MU, Daisy C, Nayagam BRD, Bhuvanesh N. Experimental and theoretical studies of 1,3,5‐tris (bromomethyl)‐2,4,6‐trimethylbenzene with 2‐pyridone. J PHYS ORG CHEM 2021. [DOI: 10.1002/poc.4188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- R. Nandini Asha
- Department of Chemistry and Research Centre Popes' College (Autonomous) Sawyerpuram Tuticorin 628251 India
- Manonmaniam Sundaranar University Tirunelveli India
| | - M. Usha Rahini
- Department of Chemistry and Research Centre Popes' College (Autonomous) Sawyerpuram Tuticorin 628251 India
- Manonmaniam Sundaranar University Tirunelveli India
| | - Caroline Daisy
- Department of Chemistry and Research Centre Popes' College (Autonomous) Sawyerpuram Tuticorin 628251 India
- Manonmaniam Sundaranar University Tirunelveli India
| | - B. Ravindran Durai Nayagam
- Department of Chemistry and Research Centre Popes' College (Autonomous) Sawyerpuram Tuticorin 628251 India
- Manonmaniam Sundaranar University Tirunelveli India
| | - N. Bhuvanesh
- Department of Chemistry Texas A&M University College Station TX USA
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Kang T, Gao S, Zhao LX, Zhai Y, Ye F, Fu Y. Design, Synthesis, and SAR of Novel 1,3-Disubstituted Imidazolidine or Hexahydropyrimidine Derivatives as Herbicide Safeners. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:45-54. [PMID: 33372787 DOI: 10.1021/acs.jafc.0c04436] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herbicide safeners enhance herbicide detoxification in crops without reducing their herbicidal efficacy against target weeds. To alleviate maize injury caused by the sulfonylurea herbicide nicosulfuron, a series of 1,3-disubstituted imidazolidine or hexahydropyrimidine derivatives were rationally designed via bioisosterism and active subunit combinations. Thirty novel compounds were synthesized using an efficient one-pot method and low-cost raw materials and characterized by IR, 1H NMR, 13C NMR, and high-resolution mass spectrometer (HRMS). Bioactivity and structure-activity relationship (SAR) were evaluated for herbicide safeners tested against nicosulfuron injury. Most of the compounds effectively protected sensitive maize against nicosulfuron damage. The parent skeletons and substituents of the target compounds both substantially influenced their safener activity. Compound I-3 exhibited superior bioactivity compared to the safener isoxadifen-ethyl. Molecular docking simulations disclosed that compound I-3 competed with nicosulfuron for the acetolactate synthase active site and demonstrated that this is the protective mechanism of safeners. The target compound I-3 presented with strong herbicide safener activity in maize and is, therefore, a potential candidate for the development of a novel herbicide safener.
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Affiliation(s)
- Tao Kang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yue Zhai
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Zhang YY, Gao S, Hoang MT, Wang ZW, Ma X, Zhai Y, Li N, Zhao LX, Fu Y, Ye F. Protective efficacy of phenoxyacetyl oxazolidine derivatives as safeners against nicosulfuron toxicity in maize. PEST MANAGEMENT SCIENCE 2021; 77:177-183. [PMID: 32652758 DOI: 10.1002/ps.6005] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 07/04/2020] [Accepted: 07/11/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Herbicide safeners mitigate crop damage without reducing herbicide efficacy. Here, the protective effects of phenoxyacetyl oxazolidine derivatives as potential safeners were evaluated with a view toward reducing injury caused by sulfonylurea herbicide nicosulfuron to sensitive maize varieties. RESULTS Growth indices demonstrated that the bioactivity of compound 9 (N-phenoxyacety-2-methyl-2,4-diethyl-1,3-oxazolidine) was superior to that of R-28725 and all other compounds tested. Compound 9 induced endogenous glutathione and upregulated glutathione-S-transferase (GST) in maize. Thus, it could enhance maize tolerance to nicosulfuron. Compared with the untreated water control group, the maximum reaction rate of GST was increased by 37.62%, while the maximum velocity of GST was decreased by 61.93% after treatment with compound 9. Acetolactate synthase relative activity was significantly enhanced in the case of treatment with compound 9, indicating the excellent protective effects of compound 9 against nicosulfuron in maize. CONCLUSIONS The present work demonstrates that phenoxyacetyl oxazolidine derivatives are potentially efficacious as herbicide safeners and merit further investigation.
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Affiliation(s)
- Yuan-Yuan Zhang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Minh-Tu Hoang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Zi-Wei Wang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Xin Ma
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Yue Zhai
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Na Li
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Li-Xia Zhao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
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Sun XL, Ji ZM, Wei SP, Ji ZQ. Design, Synthesis, and Herbicidal Activity of N-Benzyl-5-cyclopropyl-isoxazole-4-carboxamides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:15107-15114. [PMID: 33301336 DOI: 10.1021/acs.jafc.0c03582] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Based on the structures of isoxaflutole (IFT) and N-isobutyl-N-(4-chloro-benzyl)-4-chloro-2-pentenamide, a series of N-benzyl-5-cyclopropyl-isoxazole-4-carboxamides was designed by connecting their pharmacophores (i.e., a multitarget drug design strategy). A total of 27 N-benzyl-5-cyclopropyl-isoxazole-4-carboxamides were prepared from 5-cyclopropylisoxazole-4-carboxylic acid and substituted benzylamines, and their structures were confirmed by NMR and MS. Laboratory bioassays indicated that I-26 showed 100% inhibition against Portulaca oleracea and Abutilon theophrasti at a concentration of 10 mg/L, better than the positive control butachlor (50% inhibition for both weeds). A strong growth inhibition was observed, but a typical bleaching phenomenon of IFT could not be observed in the Petri dish assay. I-05 displayed excellent postemergence herbicidal activity against Echinochloa crusgalli and A. theophrasti at a rate of 150 g/ha, and bleaching symptoms were observed in the leaves of treated weeds. The bleaching effect of Chlamydomonas reinhardtii treated by I-05 could be reversed by adding homogentisate. Enzymatic bioassays indicated that I-05 could not inhibit 4-hydroxyphenylpyruvate dioxygenase (HPPD) activity, but II-05, an isoxazole ring-opening product of I-05, could inhibit HPPD activity with an EC50 value of 1.05 μM, similar to that of mesotrione (with an EC50 value of 1.35 μM). Detailed discussion about observed herbicidal symptoms is provided in the Results and Discussion section. This investigation provided a proof-of-concept foundation that a multitarget drug design strategy could be applied in agrochemical research.
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Affiliation(s)
- Xin-Lin Sun
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
| | - Zhen-Meng Ji
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
| | - Shao-Peng Wei
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticides, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Zhi-Qin Ji
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
- Shaanxi Province Key Laboratory Research & Development on Botanical Pesticides, Northwest A&F University, Yangling 712100, Shaanxi Province, China
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A luminescent sensor based on a new Cd-MOF for nitro explosives and organophosphorus pesticides detection. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108272] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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41
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Syntheses, crystal structures, spectroscopic characterizations, DFT calculations, hirshfeld surface analyses and monte carlo simulations of novel long-chain alkyl-substituted 1,4-benzothiazine derivatives. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Huang H, Wang MM, Shu L, Yan YL, Zhang JQ, Liu JM, Zhan XH, Zhang DY. Discovery of novel arylthioacetic acid derivatives as 4-hydroxyphenylpyruvate dioxygenase inhibitors. PEST MANAGEMENT SCIENCE 2020; 76:4112-4122. [PMID: 32578327 DOI: 10.1002/ps.5967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/12/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND 4-Hydroxyphenylpyruvate dioxygenase (HPPD) plays an important role in addressing the issue of plant protection research. In a continuing effort to discover novel HPPD inhibitors, we adopted a bioisosterism strategy to design a series of novel arylthioacetic acid scaffold based on the previously discovered aryloxyacetic acid scaffold. This study sheds new light on the discovery of novel HPPD inhibitors. RESULTS The compounds A1-A30 and B1-B39 were prepared through an efficient synthetic route for in vitro and glasshouse experiments (herbicidal activities, herbicidal activity spectrum, and crop selectivity). Preliminary bioassay results reveal that these derivatives are promising Arabidopsis thaliana HPPD inhibitors, compounds A11 (Ki = 0.021 μmol L-1 ) and B20 (Ki = 0.022 μmol L-1 ), which exhibit similar activities to that of mesotrione (Ki = 0.020 μmol L-1 ). The glasshouse experiments data indicated that compounds B34 displayed excellent herbicidal activity, which was higher compared to that of mesotrione. Moreover, molecular simulation results show that the compounds B20, B34, and mesotrione shared similar interplay with surrounding residues, which led to a perfect interaction with the active site of Arabidopsis thaliana HPPD. Based on herbicidal results, compound B34 was selected for crop selectivity studies (corn injury ≤ 10%), indicating its potential for weed control in corn fields. CONCLUSION These bioassay results showed that the compound B34 could be used as a possible lead compound for the development of HPPD inhibitors. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Hao Huang
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Man-Man Wang
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Lei Shu
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Yi-Le Yan
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Jian-Qiu Zhang
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Jian-Min Liu
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Xiao-Hang Zhan
- School of Sciences, China Pharmaceutical University, Nanjing, China
| | - Da-Yong Zhang
- School of Sciences, China Pharmaceutical University, Nanjing, China
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Zhao LX, Hu JJ, Wang ZX, Yin ML, Zou YL, Gao S, Fu Y, Ye F. Novel phenoxy-(trifluoromethyl)pyridine-2-pyrrolidinone-based inhibitors of protoporphyrinogen oxidase: Design, synthesis, and herbicidal activity. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 170:104684. [PMID: 32980064 DOI: 10.1016/j.pestbp.2020.104684] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
As important chemical pesticides, protoporphyrinogen oxidase (PPO, EC 1.3.3.4) herbicides play a vital role in weed management. Herein, in a search for novel PPO herbicides, a series of phenoxypyridine-2-pyrrolidinone derivatives were synthesized and their herbicidal activities were tested. To confirm the structures of the newly synthesized compounds, a colorless single crystal of compound 9d was obtained and crystallographic data collected. PPO inhibition experiments showed that most compounds have PPO inhibitory effects. The half-maximal inhibitory concentration (IC50) of compound 9d and oxyfluorfen were 0.041 mg/L and 0.043 mg/L, respectively, which showed compound 9d was the most potent compound. Compound 9d reduced the Chlorophyll a (Chl a) and Chlorophyll b (Chl b) contents of Abutilon theophrasti (A. theophrasti), to 0.306 and 0.217 mg/g, respectively. Crop selectivity experiments and field trial indicated that compound 9d can potentially be used to develop post-emergence herbicides for weed control in rice, cotton, and peanut. Molecular docking studies showed that both oxyfluorfen and compound 9d can enter the PPO cavity to occupy the active site and compete with the porphyrin to block the chlorophyll synthesis process, affect photosynthesis, and eventually cause weed death. Compound 9d was found to be a promising lead compound for novel herbicide development.
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Affiliation(s)
- Li-Xia Zhao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Jia-Jun Hu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Zhi-Xin Wang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Min-Lei Yin
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Yue-Li Zou
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China.
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Fu Q, Kang SJ, Zhong LK, Chen J, Tan CX, Weng JQ, Xu TM, Liu XH. Synthesis and herbicidal activity of new pyrazole ketone derivatives. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2020.1828884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Qing Fu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Base of National Southern Pesticide Research Centre, Zhejiang Research Institute of Chemical Industry, Hangzhou, China
| | - Sheng-Jie Kang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Base of National Southern Pesticide Research Centre, Zhejiang Research Institute of Chemical Industry, Hangzhou, China
| | - Liang-Kun Zhong
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Base of National Southern Pesticide Research Centre, Zhejiang Research Institute of Chemical Industry, Hangzhou, China
| | - Jie Chen
- School of Forestry & Biotechnology, Zhejiang A & F University, Hangzhou, China
| | - Cheng-Xia Tan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Jian-Quan Weng
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Tian-Ming Xu
- Zhejiang Base of National Southern Pesticide Research Centre, Zhejiang Research Institute of Chemical Industry, Hangzhou, China
| | - Xing-Hai Liu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
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Guo KL, Zhao LX, Wang ZW, Gao YC, Li JJ, Gao S, Fu Y, Ye F. Design, Synthesis, and Bioevaluation of Substituted Phenyl Isoxazole Analogues as Herbicide Safeners. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:10550-10559. [PMID: 32886503 DOI: 10.1021/acs.jafc.0c01867] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Herbicide safeners enhance herbicide detoxification in crops without affecting target weed sensitivity. To enhance crop tolerance to the toxicity-related stress caused by the herbicide acetochlor (ACT), a new class of substituted phenyl isoxazole derivatives was designed by an intermediate derivatization method as herbicide safeners. Microwave-assisted synthesis was used to prepare the phenyl isoxazole analogues, and all of the structures were confirmed via IR, 1H NMR, 13C NMR, and HRMS. Compound I-1 was further characterized by X-ray diffraction analysis. Bioassay results showed that most of the obtained compounds provided varying degrees of safening against ACT-induced injury by increasing the corn growth recovery, glutathione content, and glutathione S-transferase activity. In particular, compound I-20 showed excellent safener activity against ACT toxicity, comparable to that of the commercial safener benoxacor. Gaussian calculations have been performed and the results indicated that the nucleophilic ability of compound I-20 is higher than that of benoxacor, thus the activity is higher than that of benoxacor. These findings demonstrate that phenyl isoxazole derivatives possess great potential for protective management in cornfields.
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Affiliation(s)
- Ke-Liang Guo
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Li-Xia Zhao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Zi-Wei Wang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying-Chao Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Juan-Juan Li
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
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Deng X, Zheng W, Jin C, Bai L. Synthesis of Novel 6-Aryloxy-4-chloro-2-phenylpyrimidines as Fungicides and Herbicide Safeners. ACS OMEGA 2020; 5:23996-24004. [PMID: 32984721 PMCID: PMC7513367 DOI: 10.1021/acsomega.0c03300] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 09/01/2020] [Indexed: 05/02/2023]
Abstract
Fenclorim is a commercial herbicide safener with fungicidal activity used for chloroacetanilide herbicides, which might be suitable as a lead compound for screening novel fungicides. However, little has been reported so far on the structure-activity relationship of fungicidal activities of fenclorim or its analogues. Here, a series of 4-chloro-6-substituted phenoxy-2-phenylpyrimidine derivatives was synthesized by a substructure splicing route using fenclorim as a lead compound. The structures of synthesized derivatives were characterized by 1H NMR, 13C NMR, and HRMS. Their fungicidal and herbicide safening activities were then evaluated. The results revealed that compound 11 had the best fungicidal activity against Sclerotinia sclerotiorum and Thanatephorus cucumeris, which was better than that of the control pyrimethanil. Moreover, compounds 3, 5, and 25 exhibited excellent safening activities against fresh weight, plant height, and root length, respectively. Such activities were significantly improved when compared to fenclorim. In summary, these findings look promising for the preparation of new fungicides and herbicide safeners based on the structure of fenclorim.
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Liu Y, Gao S, Yang L, Liu YL, Liang XM, Ye F, Fu Y. A Highly Selective Perylenediimide-Based Chemosensor: "Naked-Eye" Colorimetric and Fluorescent Turn-On Recognition for Al 3. Front Chem 2020; 8:702. [PMID: 33024742 PMCID: PMC7516037 DOI: 10.3389/fchem.2020.00702] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/07/2020] [Indexed: 12/28/2022] Open
Abstract
A novel “turn-on” fluorescent probe (PCN) was designed, synthesized, and characterized with perylene tetracarboxylic disimide as the fluorophore and Schiff base subunit as the metal ion receptor. The probe demonstrated a considerable fluorescence enhancement in the presence of Al3+ in DMF with high selectivity and sensitivity. Furthermore, the considerably “off–on” fluorescence response simultaneously led to the apparent color change from colorless to brilliant yellow, which could also be identified by naked eye easily. The sensing capability of PCN to Al3+ was evaluated by the changes in ultraviolet–visible, fluorescence, Fourier transform–infrared, proton nuclear magnetic resonance, and high-resolution mass spectrometry spectroscopies. The linear concentration range for Al3+ was 0–63 μM with a detection limit of 0.16 μM, which allowed for the quantitative determination of Al3+.
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Affiliation(s)
- Yan Liu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Shuang Gao
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Liu Yang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Yu-Long Liu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Xiao-Min Liang
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Fei Ye
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
| | - Ying Fu
- Department of Applied Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin, China
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Gao S, Liu Y, Jiang J, Li X, Zhao L, Fu Y, Ye F. Encapsulation of thiabendazole in hydroxypropyl-β-cyclodextrin nanofibers via polymer-free electrospinning and its characterization. PEST MANAGEMENT SCIENCE 2020; 76:3264-3272. [PMID: 32378331 DOI: 10.1002/ps.5885] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 04/29/2020] [Accepted: 05/07/2020] [Indexed: 05/15/2023]
Abstract
BACKGROUND Thiabendazole (TBZ) is a poorly water-soluble benzimidazole fungicide. However, the water solubility of TBZ can be significantly enhanced by inclusion complexation with cyclodextrins. In this study, a thiabendazole/hydroxypropyl-β-cyclodextrin (TBZ/HPβCD) complex was synthesized and electrospinning was performed to produce a TBZ/HPβCD nanofibrous (TBZ/HPβCD-NF) complex that improved water solubility and antifungal activity. RESULTS The formation of TBZ/HPβCD-NF was characterized by Fourier transform infrared spectroscopy, X-ray diffraction and nuclear magnetic resonance. The morphology of TBZ/HPβCD-NF was studied by scanning electron microscopy. A phase solubility experiment showed that HPβCD exerted a great solubilization effect on TBZ, and TBZ/HPβCD-NF had better antifungal activity compared to that of TBZ alone. CONCLUSIONS In summary, the solid fungicidal nanodispersion prepared in the present study is a new type of formulation that can enhance the water solubility of TBZ. This formulation, which demonstrated potential as a new fast dissolving formulation type with increased efficacy, is expected to be conducive to the sustainable development of agriculture. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Shuang Gao
- Department of Applied Chemistry, Northeast Agricultural University, Harbin, China
| | - Yanyan Liu
- Department of Applied Chemistry, Northeast Agricultural University, Harbin, China
| | - Jingyu Jiang
- Department of Applied Chemistry, Northeast Agricultural University, Harbin, China
| | - Xiaoming Li
- Department of Applied Chemistry, Northeast Agricultural University, Harbin, China
| | - Lixia Zhao
- Department of Applied Chemistry, Northeast Agricultural University, Harbin, China
| | - Ying Fu
- Department of Applied Chemistry, Northeast Agricultural University, Harbin, China
| | - Fei Ye
- Department of Applied Chemistry, Northeast Agricultural University, Harbin, China
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Hoang MT, Guo KL, Ye F. Crystal structure of 2-(3,6-dimethyl-2,3-dihydro-4 H-benzo[ b][1,4]oxazin-4-yl)-2-oxoethyl acetate, C 14H 17NO 4. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2020-0215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C14H17NO4, monoclinic, P21/c (no. 14), a = 9.6719(19) Å, b = 13.529(3) Å, c = 11.094(2) Å, β = 112.31(3)°, V = 1342.9(5) Å3, Z = 4, R
gt(F) = 0.0480, wR
ref(F
2) = 0.1422, T = 293(2) K.
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Affiliation(s)
- Minh-Tu Hoang
- College of Arts and Sciences, Northeast Agricultural University , Harbin 150030, P.R. China
| | - Ke-Liang Guo
- College of Arts and Sciences, Northeast Agricultural University , Harbin 150030, P.R. China
| | - Fei Ye
- College of Arts and Sciences, Northeast Agricultural University , Harbin 150030, P.R. China
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50
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Based on the Virtual Screening of Multiple Pharmacophores, Docking and Molecular Dynamics Simulation Approaches toward the Discovery of Novel HPPD Inhibitors. Int J Mol Sci 2020; 21:ijms21155546. [PMID: 32756361 PMCID: PMC7432800 DOI: 10.3390/ijms21155546] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 07/31/2020] [Indexed: 12/31/2022] Open
Abstract
4-Hydroxyphenylpyruvate dioxygenase (HPPD) is an iron-dependent non-heme oxygenase involved in the catabolic pathway of tyrosine, which is an important enzyme in the transformation of 4-hydroxyphenylpyruvic acid to homogentisic acid, and thus being considered as herbicide target. Within this study, a set of multiple structure-based pharmacophore models for HPPD inhibitors were developed. The ZINC and natural product database were virtually screened, and 29 compounds were obtained. The binding mode of HPPD and its inhibitors obtained through molecular docking study showed that the residues of Phe424, Phe381, His308, His226, Gln307 and Glu394 were crucial for activity. Molecular-mechanics-generalized born surface area (MM/GBSA) results showed that the coulomb force, lipophilic and van der Waals (vdW) interactions made major contributions to the binding affinity. These efforts will greatly contribute to design novel and effective HPPD inhibitory herbicides.
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