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Wen H, Du J, Wang Y, Lv M, Ding H, Liu H, Xu H. Construction and Single-Crystal Structures of N-Isoxazolin-5-ylcarbonylindole Derivatives, and Their Pesticidal Activities and Toxicology Study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:6913-6920. [PMID: 38517181 DOI: 10.1021/acs.jafc.3c07015] [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: 03/23/2024]
Abstract
To explore natural product-based pesticide candidates, a series of indole derivatives containing the isoxazoline skeleton at the N-1 position were synthesized by 1,3-dipolar [2 + 3] cycloaddition reaction. Their structures were characterized by melting points (mp), infrared (IR) spectra, proton nuclear magnetic resonance spectra (1H NMR), carbon-13 nuclear magnetic resonance spectra (13C NMR), and high resolution mass spectrometry (HRMS). The single-crystal structures of five compounds were presented. Against Tetranychus cinnabarinus Boisduval, compound 3b showed greater than 3.8-fold acaricidal activity of indole and good control effects under glasshouse conditions. Against Aphis citricola Van der Goot, compounds 3b and 3q exhibited 48.3- and 36.8-fold aphicidal activity of indole and 6-methylindole, respectively. Particularly, compound 3b showed good bioactivities against T. cinnabarinus and A. citricola. Against Eriosoma lanigerum Hausmann, compound 3h and 3i showed 2.1 and 1.9 times higher aphicidal activity compared to indole. Furthermore, the construction of the epidermal cuticle layer of 3b-treated carmine spider mites was distinctly damaged, which ultimately led to their death.
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Affiliation(s)
- Houpeng Wen
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi China
| | - Jiawei Du
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi China
| | - Yanyan Wang
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi China
| | - Min Lv
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi China
- School of Marine Sciences, Ningbo University, Ningbo 315211, Zhejiang China
| | - Haixia Ding
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi China
| | - Huqi Liu
- College of Life Science, Northwest A&F University, Yangling 712100, Shaanxi China
| | - Hui Xu
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi China
- School of Marine Sciences, Ningbo University, Ningbo 315211, Zhejiang China
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2
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Ayyolath A, Kallingal A, Kundil VT, Suresh AM, Jayadevi Variyar E. Investigating the disease-modifying properties of sclerotiorin in Alzheimer's therapy using acetylcholinesterase inhibition. Chem Biol Drug Des 2023; 102:292-302. [PMID: 37076430 DOI: 10.1111/cbdd.14244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/27/2023] [Accepted: 04/04/2023] [Indexed: 04/21/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder caused due to the damage and loss of neurons in specific brain regions. It is the most common form of dementia observed in older people. The symptoms start with memory loss and gradually cause the inability to speak and do day-to-day activities. The cost of caring for those affected individuals is huge and is probably beyond most developing countries capability. Current pharmacotherapy for AD includes compounds that aim to increase neurotransmitters at nerve endings. This can be achieved by cholinergic neurotransmission through inhibition of the cholinesterase enzyme. The current research aims to find natural substances that can be used as drugs to treat AD. The present work identifies and explains compounds with considerable Acetylcholinesterase (AChE) inhibitory activities. The pigment was extracted from the Penicillium mallochii ARA1 (MT373688.1) strain using ethyl acetate, and the active compound was identified using chromatographic techniques followed by structural confirmation with NMR. AChE inhibition experiments, enzyme kinetics, and molecular dynamics simulation studies were done to explain the pharmacological and pharmacodynamic properties. We identified that the compound sclerotiorin in the pigment has AChE inhibitory activity. The compound is stable and can bind to the enzyme non-competitively. Sclerotiorin obeys all the drug-likeliness parameters and can be developed as a promising drug in treating AD.
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Affiliation(s)
- Aravind Ayyolath
- Laboratory of Bacterial Genetics, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Anoop Kallingal
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Varun Thachan Kundil
- Department of Biotechnology and Microbiology, School of Life Science, Kannur University, Palayad, Kerala, India
| | - Akshay Maniyeri Suresh
- Laboratory of Bacterial Genetics, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - E Jayadevi Variyar
- Department of Biotechnology and Microbiology, School of Life Science, Kannur University, Palayad, Kerala, India
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3
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Kang H, Torruellas C, Kozlowski MC. Asymmetric Total Synthesis of Chaetoglobin A. J Org Chem 2023; 88:6691-6703. [PMID: 37195069 PMCID: PMC10411588 DOI: 10.1021/acs.joc.3c00002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
An asymmetric total synthesis of chaetoglobin A was achieved. Atroposelective oxidative coupling of a phenol incorporating all but one carbon of the final product was used as a key step to generate axial chirality. The stereochemical outcome of the catalytic oxidative phenolic with the highly substituted phenol used herein was found to be opposite that of the simpler congeners reported previously, providing a cautionary tale about extrapolating asymmetric processes from simple to more complex substrates. Optimization of the postphenolic coupling steps including formylation, oxidative dearomatization, and selective deprotection steps are outlined. The tertiary acetates of chaetoglobin A were exceptionally labile due to activation by the adjacent keto groups, which complicated each of these steps. In contrast, the final oxygen to nitrogen exchange proceeded readily and the spectroscopic data from the synthetic material matches that of the isolated natural product in all respects.
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Affiliation(s)
- Houng Kang
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Chemistry Education, Chungbuk National University, Cheongju, Chungbuk 28644, South Korea
| | - Carilyn Torruellas
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marisa C. Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Natural-product-based pesticides: Semisynthesis, structural elucidation, and evaluation of new cholesterol-matrine conjugates as pesticidal agents. Bioorg Med Chem Lett 2021; 50:128350. [PMID: 34478839 DOI: 10.1016/j.bmcl.2021.128350] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 08/19/2021] [Accepted: 08/26/2021] [Indexed: 11/21/2022]
Abstract
To develop new potential pesticide candidates from low value-added natural bioactive products, a series of new cholesterol-matrine conjugates (I(a-e)-IV(a-e)) were prepared from two lead compounds cholesterol and matrine. Against Mythimna separata Walker, compound IVa exhibited 3.0 and 2.6 folds promising insecticidal activity of cholesterol and matrine, respectively; against Aphis citricola Van der Goot, compound IVd showed 4.3 and 2.2 folds potent aphicidal activity of their precursors; notably, it also showed good control effects in the greenhouse; against Plutella xylostella Linnaeus at a dose of 20 μg/nymph, compound IIIe exhibited 2.8 and 2.0 folds oral toxicity of cholesterol and matrine, respectively. Compounds IIIe, IVd and IVe can be used as the leads for further structural optimization as the insecticidal and aphicidal agents.
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5
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Li S, Lv M, Sun Z, Hao M, Xu H. Optimization of Osthole in the Lactone Ring: Structural Elucidation, Pesticidal Activities, and Control Efficiency of Osthole Ester Derivatives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:6465-6474. [PMID: 34077224 DOI: 10.1021/acs.jafc.1c01434] [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: 06/12/2023]
Abstract
Here, we prepared a series of novel osthole-type ester derivatives modified in the lactone ring of osthole, which is isolated from Cnidium monnieri. The positions of H-3 and H-4 of the representative compound 4z were determined by a 1H-1H COSY spectrum. By opening the lactone ring of osthole, the double bonds at the C-3 and C-4 positions of diol 3 and esters 4a-4z, 4a', and 4b' were still retained as a Z configuration. That is, H-3 and H-4 of compounds 3 and 4a-4z, 4a', and 4b' were all in the cis relationship. The steric configurations of 4k, 4v, and 4z were further undoubtedly determined by single-crystal X-ray diffraction. Against Tetranychus cinnabarinus Boisduval, four aliphatic esters 4c (R = n-C3H7; LC50: 0.31 mg/mL), 4d (R = CH3(CH2)10; LC50: 0.24 mg/mL), 4a' (R = CH3(CH2)9; LC50: 0.28 mg/mL), and 4b' (R = CH3(CH2)12; LC50: 0.32 mg/mL) showed the most promising acaricidal activity, and compounds 4c, 4d, and 4a' also exhibited a potent control efficiency. Especially, compound 4d exhibited greater than fivefold acaricidal activity of the precursor osthole (LC50: 1.22 mg/mL). Against Mythimna separata Walker, compounds 4g, 4l, and 4m displayed 1.6-1.8-fold potent insecticidal activity of osthole. It demonstrated that the lactone ring of osthole is not necessary for the agricultural activities, thiocarbonylation of osthole was not beneficial for the agricultural activities, introduction of R as an aliphatic chain is vital for the acaricidal activity, notably, the length of the aliphatic chain is related to the acaricidal activity, 4d could be further studied as a lead acaricidal agent, and to the aromatic series, R containing the fluorine atom(s) is important for the insecticidal activity.
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Affiliation(s)
- Shaochen Li
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Min Lv
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Zhiqiang Sun
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Meng Hao
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Hui Xu
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi Province, China
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Bhowmick A, Warghude PK, Dharpure PD, Bhat RG. Direct access to α-acyloxycarbonyl compounds and esters via oxidative esterification of aldehydes under visible light. Org Chem Front 2021. [DOI: 10.1039/d1qo00731a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient synthesis of α-acyloxycarbonyl compounds and esters from aldehydes and α-bromocarbonyl compounds/benzyl bromide derivatives via photoredox catalysis has been developed.
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Affiliation(s)
- Anindita Bhowmick
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India
| | - Prakash K. Warghude
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India
| | - Pankaj D. Dharpure
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India
| | - Ramakrishna G. Bhat
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhabha Road, Pashan, 411008, Maharashtra, India
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Donabauer K, Murugesan K, Rozman U, Crespi S, König B. Photocatalytic Reductive Radical-Polar Crossover for a Base-Free Corey-Seebach Reaction. Chemistry 2020; 26:12945-12950. [PMID: 32686166 PMCID: PMC7589390 DOI: 10.1002/chem.202003000] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/15/2020] [Indexed: 01/07/2023]
Abstract
A metal-free generation of carbanion nucleophiles is of prime importance in organic synthesis. Herein we report a photocatalytic approach to the Corey-Seebach reaction. The presented method operates under mild redox-neutral and base-free conditions giving the desired product with high functional group tolerance. The reaction is enabled by the combination of photo- and hydrogen atom transfer (HAT) catalysis. This catalytic merger allows a C-H to carbanion activation by the abstraction of a hydrogen atom followed by radical reduction. The generated nucleophilic intermediate is then capable of adding to carbonyl electrophiles. The obtained dithiane can be easily converted to the valuable α-hydroxy carbonyl in a subsequent step. The proposed reaction mechanism is supported by emission quenching, radical-radical homocoupling and deuterium labeling studies as well as by calculated redox-potentials and bond strengths.
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Affiliation(s)
- Karsten Donabauer
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
| | - Kathiravan Murugesan
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
| | - Urša Rozman
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
| | - Stefano Crespi
- Stratingh Institute for ChemistryUniversity of GroningenNijenborgh 49747 AGGroningenThe Netherlands
| | - Burkhard König
- Department of Organic ChemistryUniversity of RegensburgUniversitätsstraße 3193053RegensburgGermany
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Che Z, Yang J, Sun D, Tian Y, Liu S, Lin X, Jiang J, Chen G. Synthesis of Novel (9
S
)‐Acyloxy Derivatives of Quinidine and Dihydroquinidine as Insecticidal Agents. Chem Biodivers 2020; 17:e1900696. [DOI: 10.1002/cbdv.201900696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/05/2020] [Indexed: 01/17/2023]
Affiliation(s)
- Zhiping Che
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
| | - Jinming Yang
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
| | - Di Sun
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
| | - Yuee Tian
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
| | - Shengming Liu
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
| | - Xiaomin Lin
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
| | - Jia Jiang
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
| | - Genqiang Chen
- Laboratory of Pesticidal Design and SynthesisDepartment of Plant Protection, College of ForestryHenan University of Science and Technology Luoyang 471023 P. R. China
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Wiglenda T, Groenke N, Hoffmann W, Manz C, Diez L, Buntru A, Brusendorf L, Neuendorf N, Schnoegl S, Haenig C, Schmieder P, Pagel K, Wanker EE. Sclerotiorin Stabilizes the Assembly of Nonfibrillar Abeta42 Oligomers with Low Toxicity, Seeding Activity, and Beta-sheet Content. J Mol Biol 2020; 432:2080-2098. [PMID: 32061932 DOI: 10.1016/j.jmb.2020.01.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/14/2020] [Accepted: 01/28/2020] [Indexed: 01/21/2023]
Abstract
The self-assembly of the 42-residue amyloid-β peptide, Aβ42, into fibrillar aggregates is associated with neuronal dysfunction and toxicity in Alzheimer's disease (AD) patient brains, suggesting that small molecules acting on this process might interfere with pathogenesis. Here, we present experimental evidence that the small molecule sclerotiorin (SCL), a natural product belonging to the group of azaphilones, potently delays both seeded and nonseeded Aβ42 polymerization in cell-free assays. Mechanistic biochemical studies revealed that the inhibitory effect of SCL on fibrillogenesis is caused by its ability to kinetically stabilize small Aβ42 oligomers. These structures exhibit low β-sheet content and do not possess seeding activity, indicating that SCL acts very early in the amyloid formation cascade before the assembly of seeding-competent, β-sheet-rich fibrillar aggregates. Investigations with NMR WaterLOGSY experiments confirmed the association of Aβ42 assemblies with SCL in solution. Furthermore, using ion mobility-mass spectrometry, we observed that SCL directly interacts with a small fraction of Aβ42 monomers in the gas phase. In comparison to typical amyloid fibrils, small SCL-stabilized Aβ42 assemblies are inefficiently taken up into mammalian cells and have low toxicity in cell-based assays. Overall, these mechanistic studies support a pathological role of stable, β-sheet-rich Aβ42 fibrils in AD, while structures with low β-sheet content may be less relevant.
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Affiliation(s)
- Thomas Wiglenda
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Nicole Groenke
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Waldemar Hoffmann
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Christian Manz
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Lisa Diez
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Alexander Buntru
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Lydia Brusendorf
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Nancy Neuendorf
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Sigrid Schnoegl
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Christian Haenig
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Peter Schmieder
- Leibniz-Institut für Molekulare Pharmakologie, Berlin, Germany
| | - Kevin Pagel
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
| | - Erich E Wanker
- Neuroproteomics, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.
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Che Z, Yang J, Sun D, Tian Y, Liu S, Lin X, Jiang J, Chen G. Combinatorial Synthesis of Novel 9R-Acyloxyquinine Derivatives as Insecticidal Agents. Comb Chem High Throughput Screen 2020; 23:111-118. [PMID: 31958039 DOI: 10.2174/1386207323666200120112714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/30/2019] [Accepted: 01/01/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND It is one of the effective ways for pesticide innovation to develop new insecticides from natural products as lead compounds. Quinine, the main alkaloid in the bark of cinchona tree as well as in plants in the same genus, is recognized as a safe and potent botanical insecticide to many insects. The structural modification of quinine into 9R-acyloxyquinine derivatives is a potential approach for the development of novel insecticides, which showed more toxicity than quinine. However, there are no reports on the insecticidal activity of 9Racyloxyquinine derivatives to control Mythimna separata. METHODS Endeavor to discover biorational natural products-based insecticides, 20 novel 9Racyloxyquinine derivatives were prepared and assessed for their insecticidal activity against M. separata in vivo by the leaf-dipping method at 1 mg/mL. RESULTS Among all the compounds, especially derivatives 5i, 5k and 5t exhibited the best insecticidal activity with final mortality rates of 50.0%, 57.1%, and 53.6%, respectively. CONCLUSION Overall, a free 9-hydroxyl group is not a prerequisite for insecticidal activity and C9- substitution is well tolerated; modification of out-ring double-bond is acceptable, and hydrogenation of double-bond enhances insecticidal activity; Quinine ring is essential and open of it is not acceptable. These preliminary results will pave the way for further modification of quinine in the development of potential new insecticides.
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Affiliation(s)
- Zhiping Che
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Jinming Yang
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Di Sun
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Yuee Tian
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Shengming Liu
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Xiaomin Lin
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Jia Jiang
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
| | - Genqiang Chen
- Laboratory of Pesticidal Design and Synthesis, Department of Plant Protection, College of Forestry, Henan University of Science and Technology, Luoyang 471023, Henan Province, China
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He J, Yang K, Zhao J, Cao S. LiHMDS-Promoted Palladium-Catalyzed Sonogashira Cross-Coupling of Aryl Fluorides with Terminal Alkynes. Org Lett 2019; 21:9714-9718. [DOI: 10.1021/acs.orglett.9b03815] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jingjing He
- School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Kang Yang
- School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Jianhong Zhao
- School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
| | - Song Cao
- School of Pharmacy, East China University of Science and Technology (ECUST), Shanghai 200237, China
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12
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Xu H, Xu M, Sun Z, Li S. Preparation of Matrinic/Oxymatrinic Amide Derivatives as Insecticidal/Acaricidal Agents and Study on the Mechanisms of Action against Tetranychus cinnabarinus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12182-12190. [PMID: 31609606 DOI: 10.1021/acs.jafc.9b05092] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In continuation of our program to develop natural-product-based pesticidal candidates, matrinic/oxymatrinic amides were obtained through structural optimization of matrine. N'-(4-Fluoro)phenyl-N-(4-bromo)phenylsulfonyloxymatrinic amide (IIm) showed potent insecticidal activity against Mythimna separata. N-(Un)substituted phenylsulfonylmatrinic acids (3a-c) exhibited promising acaricidal activity against Tetranychus cinnabarinus. By qRT-PCR analysis of nAChR subunits and AChE genes and determination of AChE activity of (un)treated T. cinnabarinus, it suggested that the open lactam ring of matrine and carboxyl group and (4-methyl)phenylsulfonyl of N-(4-methyl)phenylsulfonylmatrinic acid (3b) were necessary for action with α2, α4, α5, and β3 nAChR subunits; compound 3b was an inhibitor of AChE in T. cinnabarinus, and AChE was one possible target of action in T. cinnabarinus against 3b; and compound 3b may be an antagonist of nAChR and AChE in T. cinnabarinus.
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Affiliation(s)
- Hui Xu
- Research Institute of Pesticidal Design & Synthesis, College of Plant Protection/Chemistry and Pharmacy , Northwest A&F University , Yangling , Shaanxi Province 712100 , China
- School of Pharmacy , Liaocheng University , Liaocheng , Shandong Province 252059 , China
| | - Ming Xu
- Research Institute of Pesticidal Design & Synthesis, College of Plant Protection/Chemistry and Pharmacy , Northwest A&F University , Yangling , Shaanxi Province 712100 , China
| | - Zhiqiang Sun
- Research Institute of Pesticidal Design & Synthesis, College of Plant Protection/Chemistry and Pharmacy , Northwest A&F University , Yangling , Shaanxi Province 712100 , China
| | - Shaochen Li
- Research Institute of Pesticidal Design & Synthesis, College of Plant Protection/Chemistry and Pharmacy , Northwest A&F University , Yangling , Shaanxi Province 712100 , China
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13
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Efficient accumulation of sclerotiorin via overcoming low pH caused by overflow carbon metabolism during cell suspension culture of Penicillium sclerotiorum. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.05.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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Li F, Zhou Y, Yang H, Wang Z, Yu Q, Zhang FL. Monodentate Transient Directing Group Enabled Pd-Catalyzed Ortho-C–H Methoxylation and Chlorination of Benzaldehydes. Org Lett 2019; 21:3692-3695. [DOI: 10.1021/acs.orglett.9b01158] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Feng Li
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Yirong Zhou
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Heng Yang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Ziqi Wang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Qinqin Yu
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Fang-Lin Zhang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
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15
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Cao L, Yan W, Gu C, Wang Z, Zhao S, Kang S, Khan B, Zhu H, Li J, Ye Y. New Alkylitaconic Acid Derivatives from Nodulisporium sp. A21 and Their Auxin Herbicidal Activities on Weed Seeds. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2811-2817. [PMID: 30789727 DOI: 10.1021/acs.jafc.8b04996] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Five alkylitaconic acid (AA) derivatives, including two novel compounds, epideoxysporothric acid (2) and sporochartine F (5), and three known compounds, deoxysporothric acid (1), deoxyisosporothric acid (3), and 1-undecen-2,3-dicarboxylic acid (4), were obtained from the fermentation culture of the endophytic fungus Nodulisporium sp. A21. The auxin herbicidal activities of compounds 1-4 against weed seeds were investigated under laboratory conditions. In general, the tested compounds displayed radicle growth promoting activity at low doses and inhibitory activity at higher doses. Compounds 1 and 2 could significantly inhibit the radicle growth of dicotyledon weeds, Eclipta prostrata and Veronica persica, at a concentration range from 50 to 200 μg mL-1, while 3 notably stimulated radicle growth at the same concentration range. The results suggested that these AA derivatives have the potential to be used as the lead scaffold for novel auxin herbicide development. In addition, the biosynthetic pathways of 1-4 were deduced based on 13C labeling experiment.
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Affiliation(s)
- Lingling Cao
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Wei Yan
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Chenguang Gu
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Zhiyang Wang
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Shuangshuang Zhao
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Shuang Kang
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Babar Khan
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Hailiang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences , Nanjing University , Nanjing 210023 , P. R. China
| | - Jun Li
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
| | - Yonghao Ye
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , P. R. China
- Key Laboratory of Integrated Management of Crop Diseases and Pests , Ministry of Education , Nanjing 210095 , P. R. China
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16
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Zhu XL, Zhang R, Wu QY, Song YJ, Wang YX, Yang JF, Yang GF. Natural Product Neopeltolide as a Cytochrome bc 1 Complex Inhibitor: Mechanism of Action and Structural Modification. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2774-2781. [PMID: 30794394 DOI: 10.1021/acs.jafc.8b06195] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The marine natural product neopeltolide was isolated from a deep-water sponge specimen of the family Neopeltidae. Neopeltolide has been proven to be a new type of inhibitor of the cytochrome bc1 complex in the mitochondrial respiration chain. However, its detailed inhibition mechanism has remained unknown. In addition, neopeltolide is difficult to synthesize because of its very complex chemical structure. In the present work, the binding mode of neopeltolide was determined for the first time by integrating molecular docking, molecular dynamics simulations, and molecular mechanics Poisson-Boltzmann surface area calculations, which showed that neopeltolide is a Qo site inhibitor of the bc1 complex. Then, according to guidance via inhibitor-protein interaction analysis, structural modification was carried out with the aim to simplify the chemical structure of neopeltolide, leading to the synthesis of a series of new neopeltolide derivatives with much simpler chemical structures. The calculated binding energies (Δ Gcal) of the newly synthesized analogues correlated very well ( R2 = 0.90) with their experimental binding free energies (Δ Gexp), which confirmed that the computational protocol was reliable. Compound 45, bearing a diphenyl ether fragment, was successfully designed and synthesized as the most potent candidate (IC50 = 12 nM) against porcine succinate cytochrome c reductase. The molecular modeling results indicate that compound 45 formed a π-π interaction with Phe274 and two hydrogen bonds with Glu271 and His161. The present work provides a new starting point for future fungicide discovery to overcome the resistance that the existing bc1 complex inhibitors are facing.
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Affiliation(s)
- Xiao-Lei Zhu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Rui Zhang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Qiong-You Wu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Yong-Jun Song
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Yu-Xia Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Jing-Fang Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
| | - Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health of Ministry of Science and Technology , Central China Normal University , Wuhan , Hubei 430079 , People's Republic of China
- Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300071 , People's Republic of China
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Cao F, Meng ZH, Mu X, Yue YF, Zhu HJ. Absolute Configuration of Bioactive Azaphilones from the Marine-Derived Fungus Pleosporales sp. CF09-1. JOURNAL OF NATURAL PRODUCTS 2019; 82:386-392. [PMID: 30724084 DOI: 10.1021/acs.jnatprod.8b01030] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Investigation of the marine-derived fungus Pleosporales sp. CF09-1 cultured in modified PDB medium led to the isolation of six new azaphilone derivatives, pleosporalones B and C (1 and 2) and pleosporalones E-H (4-7), and one known analogue (3). The absolute configurations of C-2' and C-3' in 3 were assigned by a vibrational circular dichroism method. The C-11 relative configurations for the pair of C-11 epimers (4 and 5) were established by comparing the magnitude of the computed 13C NMR chemical shifts (Δδcalcd) with the experimental 13C NMR values (Δδexp) for the epimers. Antiphytopathogenic and anti- Vibrio activities were evaluated for 1-7. Pleosporalone B (1) exhibited potent antifungal activities against the fungi Alternaria brassicicola and Fusarium oxysporum with the same MIC value of 1.6 μg/mL, which were stronger than the positive control ketoconazole among these compounds. Additionally, pleosporalone C (2) displayed significant activity against the fungus Botryosphaeria dothidea (MIC, 3.1 μg/mL). Compounds 6 and 7 displayed moderate anti- Vibrio activities against Vibrio anguillarum and Vibrio parahemolyticus, with MIC values of 13 and 6.3 μg/mL for 6 and 6.3 and 25 μg/mL for 7, respectively.
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Affiliation(s)
- Fei Cao
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of Education Ministry of China , Hebei University , Baoding 071002 , People's Republic of China
| | - Zhi-Hui Meng
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of Education Ministry of China , Hebei University , Baoding 071002 , People's Republic of China
| | - Xing Mu
- College of Life Sciences , Hebei University , Baoding 071002 , People's Republic of China
| | - Yu-Fei Yue
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of Education Ministry of China , Hebei University , Baoding 071002 , People's Republic of China
| | - Hua-Jie Zhu
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnostics of Education Ministry of China , Hebei University , Baoding 071002 , People's Republic of China
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18
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Bityukov OV, Matveeva OK, Vil’ VA, Kokorekin VA, Nikishin GI, Terent’ev AO. Electrochemically Induced Intermolecular Cross-Dehydrogenative C–O Coupling of β-Diketones and β-Ketoesters with Carboxylic Acids. J Org Chem 2019; 84:1448-1460. [DOI: 10.1021/acs.joc.8b02791] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oleg V. Bityukov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., Moscow 119991, Russian Federation
| | - Olesya K. Matveeva
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., Moscow 119991, Russian Federation
- D. I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Square, Moscow 125047, Russian Federation
| | - Vera A. Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., Moscow 119991, Russian Federation
| | - Vladimir A. Kokorekin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., Moscow 119991, Russian Federation
- Sechenov First Moscow State Medical University, Trubetskaya st. 8-2, Moscow 119991, Russian Federation
| | - Gennady I. Nikishin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., Moscow 119991, Russian Federation
| | - Alexander O. Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., Moscow 119991, Russian Federation
- D. I. Mendeleev University of Chemical Technology of Russia, 9 Miusskaya Square, Moscow 125047, Russian Federation
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19
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Zhang B, Sun Z, Lv M, Xu H. Semisynthesis of Matrinic Acid/Alcohol/Ester Derivatives, Their Pesticidal Activities, and Investigation of Mechanisms of Action against Tetranychus cinnabarinus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:12898-12910. [PMID: 30452245 DOI: 10.1021/acs.jafc.8b04965] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To discover new natural-product-based potential pesticides, 85 matrinic acid/alcohol/ester derivatives were synthesized by structural modifications of a quinolizidine alkaloid matrine. N-(4-Methyl)benzylmatrinyl n-decylate (76) and N-(2-chloro)benzylmatrinyl n-undecylate (86) exhibited greater than seven-fold more pronounced acaricidal activity than matrine against Tetranychus cinnabarinus; N-(2-chloro)benzylmatrinyl benzoate (80) showed the most promising insecticidal activity against Mythimna separata. The carboxyl group of matrinic acids and introduction of n-decyl/ n-undecylcarbonyl into matrinic alcohols were important for the acaricidal activity; introduction of alkyloxy into the carboxyl of matrinic acids and introduction of the electron-withdrawing groups on the N-benzyl of matrinic esters were necessary for the insecticidal activity. Through RT-PCR and qRT-PCR analysis, it was shown that the lactam ring of matrine was vital for action on VGSC; opening the lactam ring of matrine and the alkylcarbonyl of side-chain were two important factors for acting with α1, α2, and α4 nAChR subunits; α1, α2, α4, and β3 subunits may be the target of action of compound 86 against T. cinnabarinus.
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20
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Lv M, Liu G, Jia M, Xu H. Synthesis of matrinic amide derivatives containing 1,3,4-thiadiazole scaffold as insecticidal/acaricidal agents. Bioorg Chem 2018; 81:88-92. [DOI: 10.1016/j.bioorg.2018.07.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/18/2018] [Accepted: 07/31/2018] [Indexed: 01/24/2023]
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21
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Yang R, Lv M, Xu H. Synthesis of Piperine Analogs Containing Isoxazoline/Pyrazoline Scaffold and Their Pesticidal Bioactivities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11254-11264. [PMID: 30295024 DOI: 10.1021/acs.jafc.8b03690] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In continuation of our program to discover new potential pesticidal agents, thirty-one piperine analogs containing isoxazoline/pyrazoline scaffold were prepared, and confirmed by infrared spectra, proton/carbon-13 nuclear magnetic resonance spectra, and high-resolution mass spectra. The structures of compounds VIIb and VIIIc were further determined by 1H-1H COSY spectra. Especially the configuration of compound VIIIc was unambiguously confirmed by single-crystal X-ray diffraction. Their pesticidal activities were evaluated against three serious and typically crop-threatening agricultural pests, Tetranychus cinnabarinus Boisduval (spider mite), Mythimna separata Walker (Oriental armyworm), and Plutella xylostella Linnaeus (diamondback moth). Compounds VIIIb and VIIIc exhibited greater than 40-fold more potent acaricidal activity than the lead compound piperine against T. cinnabarinus. Notably, compounds VIa-c exhibited more pronounced oral toxicity against P. xylostella than toosendanin; compounds VIb and VIc displayed more promising growth inhibitory activity against M. separata than toosendanin. It demonstrated that the methylenedioxy and isoxazoline scaffolds were important for the oral toxicity and growth inhibitory activity against P. xylostella and M. separata, respectively; the ethylenedioxy and isoxazoline scaffolds were vital for the acaricidal activity against T. cinnabarinus. Moreover, compounds VIb, VIIf, and VIIIc showed very low toxicity against NRK-52E cells.
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Affiliation(s)
- Ruige Yang
- Research Institute of Pesticidal Design & Synthesis, College of Chemistry and Pharmacy/Plant Protection , Northwest A&F University , Yangling 712100 , Shaanxi Province , China
| | - Min Lv
- Research Institute of Pesticidal Design & Synthesis, College of Chemistry and Pharmacy/Plant Protection , Northwest A&F University , Yangling 712100 , Shaanxi Province , China
| | - Hui Xu
- Research Institute of Pesticidal Design & Synthesis, College of Chemistry and Pharmacy/Plant Protection , Northwest A&F University , Yangling 712100 , Shaanxi Province , China
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22
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Kang H, Torruellas C, Liu J, Kozlowski MC. Total Synthesis of Chaetoglobin A via Catalytic, Atroposelective Oxidative Phenol Coupling. Org Lett 2018; 20:5554-5558. [PMID: 30207731 DOI: 10.1021/acs.orglett.8b02183] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first total synthesis of chaetoglobin A (1), which features a chiral axis between two identical highly oxygenated bicyclic cores, was successfully completed in 12 steps from 2,6-dimethoxytoluene. Vanadium-catalyzed oxidative phenol coupling, as a key step, enabled generation of the axial chirality.
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Affiliation(s)
- Houng Kang
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Carilyn Torruellas
- U.S. Army Edgewood Chemical Biological Center , RDCB-DRC-P/Building E3400 , Aberdeen Proving Ground , Maryland 21010-5424 , United States
| | - Jinchu Liu
- Department of Process Research and Development , Merck Research Laboratories , Rahway , New Jersey 07065 , United States
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
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23
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Huang J, Lv M, Thapa S, Xu H. Synthesis of novel quinolinomatrine derivatives and their insecticidal/acaricidal activities. Bioorg Med Chem Lett 2018; 28:1753-1757. [DOI: 10.1016/j.bmcl.2018.04.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/10/2018] [Accepted: 04/11/2018] [Indexed: 12/17/2022]
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24
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Yang R, Zhang Y, Xu H. Synthesis of novel isoxazoline-containing podophyllotoxin/2′(2′,6′)-(di)halogenopodophyllotoxin derivatives and their insecticidal/acaricidal activities. Bioorg Med Chem Lett 2018; 28:1410-1416. [DOI: 10.1016/j.bmcl.2018.02.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 02/06/2018] [Accepted: 02/09/2018] [Indexed: 12/16/2022]
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25
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26
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Wei MY, Wang CF, Wang KL, Qian PY, Wang CY, Shao CL. Preparation, Structure, and Potent Antifouling Activity of Sclerotioramine Derivatives. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2017; 19:372-378. [PMID: 28688034 DOI: 10.1007/s10126-017-9760-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 05/10/2017] [Indexed: 06/07/2023]
Abstract
A series of 30 sclerotioramine derivatives (2-31) of the natural compound, (+)-sclerotiorin (1), has been successfully semi-synthesized by a one-step reaction with high yields (up to 80%). The structures of these new derivatives were established by extensive spectroscopic methods and single-crystal X-ray diffraction analysis for 3, 6, and 10. (+)-Sclerotiorin (1) and its semisynthetic derivatives (2-31) were evaluated for their antifouling activity. Most of them except 6, 7, 8, 12, and 28 showed potent antifouling activity against the larval settlement of the barnacle Balanus amphitrite. More interestingly, most of the aromatic amino-derivatives (13-17, 19-21, 23, 25-27, and 29-31) showed strong antifouling activity; however, only two aliphatic amino-derivatives (5 and 10) had the activity.
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Affiliation(s)
- Mei-Yan Wei
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, The People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266200, The People's Republic of China
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, The People's Republic of China
| | - Cui-Fang Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, The People's Republic of China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266200, The People's Republic of China
| | - Kai-Ling Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, The People's Republic of China
| | - Pei-Yuan Qian
- KAUST Global Collaborative Research, Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, The People's Republic of China
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, The People's Republic of China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266200, The People's Republic of China.
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, The People's Republic of China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266200, The People's Republic of China.
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27
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Makrerougras M, Coffinier R, Oger S, Chevalier A, Sabot C, Franck X. Total Synthesis and Structural Revision of Chaetoviridins A. Org Lett 2017; 19:4146-4149. [DOI: 10.1021/acs.orglett.7b02053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mehdi Makrerougras
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Romain Coffinier
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Samuel Oger
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Arnaud Chevalier
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Cyrille Sabot
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
| | - Xavier Franck
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014 & FR 3038), 76000 Rouen, France
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28
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Li D, Zhang S, Song Z, Wang G, Li S. Bioactivity-guided mixed synthesis accelerate the serendipity in lead optimization: Discovery of fungicidal homodrimanyl amides. Eur J Med Chem 2017; 136:114-121. [PMID: 28486209 DOI: 10.1016/j.ejmech.2017.04.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 04/26/2017] [Accepted: 04/29/2017] [Indexed: 12/31/2022]
Abstract
The bioactivity-guided mixed synthesis was conceived, in which the designed mix-reactions were run in parallel for simultaneous construction of different kinds of analogs. The valuable ones were protruded by biological screening. This tactic will facilitate more rapid incorporation of bioactive candidates into pesticide chemists' repertoire, exemplified by the optimization of less explored homodrimanes as antifungal ingredients. The discovery of D9 as a potent fungicidal agent can be completed in <2 weeks by one student, with EC50 of 3.33 mg/L and 2.45 mg/L against S. sclerotiorum and B. cinerea, respectively. To confirm the practicability, time-efficiency, and reliability, specific homodrimanes (82 derivatives) were synthesized and elucidated separately and determined for EC50 values. The SAR correlated well with the intentionally mixed synthesis and the potential was further confirmed by the in vivo bioassay. This methodology will foster more efficient exploration of biologically relevant chemical space of natural products in pesticide discovery, and can also be tailored readily for the lead optimization in medicinal chemistry.
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Affiliation(s)
- Dangdang Li
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Shasha Zhang
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Zehua Song
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Guotong Wang
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China
| | - Shengkun Li
- Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, Weigang 1, Xuanwu District, Nanjing 210095, People's Republic of China; Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, People's Republic of China; Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China.
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29
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Zhang R, Wu QY, Tao J, Pan JH, Yang GF. An ionic liquid promoted approach to bitriazolyl compounds as succinate–ubiquinone oxidoreductase inhibitors. NEW J CHEM 2017. [DOI: 10.1039/c6nj02454h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Bitriazolyl compounds, a novel skeleton that is totally different from existing commercialized SQR-inhibiting fungicides, could provide a new lead for further development of SQR inhibitors.
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Affiliation(s)
- Rui Zhang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry Central China Normal University
- Wuhan 430079
- P. R. China
| | - Qiong-You Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry Central China Normal University
- Wuhan 430079
- P. R. China
| | - Jun Tao
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry Central China Normal University
- Wuhan 430079
- P. R. China
| | - Jin-Huan Pan
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry Central China Normal University
- Wuhan 430079
- P. R. China
| | - Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry Central China Normal University
- Wuhan 430079
- P. R. China
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30
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Zheng S, Gu Y, Li L, Zhu R, Cai X, Bai H, Zhang J. Synthesis and fungicidal activity of tryptophan analogues – the unexpected calycanthaceous alkaloid derivatives. Nat Prod Res 2016; 31:1142-1149. [DOI: 10.1080/14786419.2016.1230117] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
- Collaborative Innovation Center of Ship Technology in Jiangsu Colleges and Universities/Marine Equipment and Technology Institute for Jiangsu University of Science and Technology, Zhenjiang, P.R. China
| | - Yongdong Gu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
| | - Longbo Li
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling, P.R. China
| | - Rui Zhu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
| | - Xingwei Cai
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, P.R. China
| | - Hongjin Bai
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar, P.R. China
| | - Jiwen Zhang
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling, P.R. China
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31
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Zheng S, Zhou X, Xu S, Zhu R, Bai H, Zhang J. Synthesis and Antimicrobial Characterization of Half-Calycanthaceous Alkaloid Derivatives. Molecules 2016; 21:molecules21091207. [PMID: 27618003 PMCID: PMC6273825 DOI: 10.3390/molecules21091207] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 09/06/2016] [Accepted: 09/06/2016] [Indexed: 11/16/2022] Open
Abstract
A total of 29 novel tetrahydropyrroloindol-based calycanthaceous alkaloid derivatives were synthesized from indole-3-acetonitrile in good yields. The synthesized compounds were evaluated against nine strains of bacteria and a wide range of plant pathogen fungi. Bioassay results revealed that majority of the compounds displayed similar or higher in vitro antimicrobial activities than the positive control. The biological activities also indicated that substituents at R₄ and R₅ significantly affect the activities. Notably, compound c4 was found to be most active among the tested calycanthaceous analogues and might be a novel potential leading compound for further development as an antifungal agent. The results could pave the way for further design and structural modification of calycanthaceous alkaloids as antimicrobial agents.
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Affiliation(s)
- Shaojun Zheng
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China.
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling 712100, Shaanxi, China.
| | - Xinping Zhou
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
| | - Shixun Xu
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
| | - Rui Zhu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China.
| | - Hongjin Bai
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
| | - Jiwen Zhang
- Key Laboratory of Protection & Utilization of Biological Resources in Tarim Basin of Xinjiang Production and Construction Corps/College of Life Sciences, Tarim University, Alar 843300, Xinjiang, China.
- Key Laboratory of Botanical Pesticide R & D in Shaanxi Province, Yangling 712100, Shaanxi, China.
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32
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Terent’ev AO, Vil’ VA, Gorlov ES, Nikishin GI, Pivnitsky KK, Adam W. Lanthanide-Catalyzed Oxyfunctionalization of 1,3-Diketones, Acetoacetic Esters, And Malonates by Oxidative C–O Coupling with Malonyl Peroxides. J Org Chem 2016; 81:810-23. [DOI: 10.1021/acs.joc.5b02233] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Alexander O. Terent’ev
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow 119991, Russian Federation
| | - Vera A. Vil’
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow 119991, Russian Federation
| | - Evgenii S. Gorlov
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow 119991, Russian Federation
| | - Gennady I. Nikishin
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow 119991, Russian Federation
| | - Kasimir K. Pivnitsky
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prospekt, Moscow 119991, Russian Federation
| | - Waldemar Adam
- Institute
of Organic Chemistry, University of Würzburg, Am Hubland, D-97074 Würzburg, Germany
- Department
of Chemistry, Facundo Bueso 110, University of Puerto Rico, Rio Piedras, Puerto Rico 00931, United States
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33
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Chen C, Wu QY, Shan LY, Zhang B, Verpoort F, Yang GF. Discovery of cytochrome bc1 complex inhibitors inspired by the natural product karrikinolide. RSC Adv 2016. [DOI: 10.1039/c6ra19424a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel and potent inhibitors targeting the cytochrome bc1 complex were discovered from the natural product karrikinolide for the first time.
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Affiliation(s)
- Cheng Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Qiong-You Wu
- Key Laboratory of Pesticide & Chemical Biology
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Lian-Ying Shan
- Key Laboratory of Pesticide & Chemical Biology
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Bei Zhang
- Key Laboratory of Pesticide & Chemical Biology
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
| | - Francis Verpoort
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Guang-Fu Yang
- Key Laboratory of Pesticide & Chemical Biology
- College of Chemistry
- Central China Normal University
- Wuhan 430079
- P. R. China
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Wang R, Zhi X, Li J, Xu H. Synthesis of Novel Oxime Sulfonate Derivatives of 2'(2',6')-(Di)chloropicropodophyllotoxins as Insecticidal Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:6668-6674. [PMID: 26166302 DOI: 10.1021/acs.jafc.5b02036] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To discover novel natural-product-based pesticidal agents, we prepared a series of oxime sulfonate derivatives of 2'(2',6')-(Di)chloropicropodophyllotoxins by structural modification of podophyllotoxin. Their structures were well-characterized by proton nuclear magnetic resonance ((1)H NMR), high-resolution mass spectrometry (HRMS), optical rotation, and melting point. Moreover, the key steric structure of compound 5f was unambiguously determined by single-crystal X-ray diffraction. Additionally, their insecticidal activity was evaluated at 1 mg/mL against the pre-third-instar larvae of oriental armyworm (Mythimna separata Walker), a typical lepidopteran pest. Among all derivatives, compounds 4c, 5c, and 5d exhibited more promising insecticidal activity, with the final mortality rates greater than 60%, when compared to their precursor podophyllotoxin and the positive control, toosendanin. It demonstrated that introduction of the chlorine atom at the C-2' or C-2',6' position on the E ring of picropodophyllotoxin or oxime sulfonate derivatives of picropodophyllotoxin was important for the insecticidal activity and introduction of a halogen (e.g., fluorine, chlorine, or bromine) atom-substituted phenylsulfonyl group on the oxime fragment of 2'(2',6')-(di)chloropicropodophyllones could lead to more promising compounds.
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35
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Yang C, Zhi X, Xu H. Synthesis of benzoxazole derivatives of honokiol as insecticidal agents against Mythimna separata Walker. Bioorg Med Chem Lett 2015; 25:2217-9. [DOI: 10.1016/j.bmcl.2015.03.052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/19/2015] [Accepted: 03/20/2015] [Indexed: 11/16/2022]
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36
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Yu X, Ding G, Zhi X, Xu H. Insight into reduction of obacunone, and their ester derivatives as insecticidal agents against Mythimna separata Walker. Bioorg Med Chem Lett 2015; 25:25-9. [DOI: 10.1016/j.bmcl.2014.11.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 10/15/2014] [Accepted: 11/08/2014] [Indexed: 11/29/2022]
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37
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Xu H, Yu X, Ding G, Gao Z, Zha J. Natural-Product-Based Insecticidal Agents 16. Semisynthesis of C7-Oxime Sulfonate Ester Derivatives of Obacunone as Insecticidal Agents against Mythimna separata Walker. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)88] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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Zhi X, Yang C, Yu X, Xu H. Synthesis and insecticidal activity of new oxime derivatives of podophyllotoxin-based phenazines against Mythimna separata Walker. Bioorg Med Chem Lett 2014; 24:5679-5682. [PMID: 25467160 DOI: 10.1016/j.bmcl.2014.10.081] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 10/09/2014] [Accepted: 10/22/2014] [Indexed: 10/24/2022]
Abstract
To discover new natural-product-based insecticidal agents, a series of novel oxime derivatives of podophyllotoxin-based phenazines modified in the C, D and E rings of podophyllotoxin were prepared and tested as insecticidal agents against the pre-third-instar larvae of oriental armyworm, Mythimna separata (Walker) in vivo at 1 mg/mL. The steric configuration of IIIc was unambiguously confirmed by single-crystal X-ray diffraction analysis. Compounds IIIa-d, and IIIi exhibited an equal or higher insecticidal activity than toosendanin.
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Affiliation(s)
- Xiaoyan Zhi
- Research Institute of Pesticidal Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
| | - Chun Yang
- Research Institute of Pesticidal Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
| | - Xiang Yu
- Research Institute of Pesticidal Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
| | - Hui Xu
- Research Institute of Pesticidal Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China.
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39
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Wang J, Yu X, Zhi X, Xu H. Synthesis and insecticidal activity of new deoxypodophyllotoxin derivatives modified in the D-ring. Bioorg Med Chem Lett 2014; 24:4542-4545. [DOI: 10.1016/j.bmcl.2014.07.076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 07/18/2014] [Accepted: 07/29/2014] [Indexed: 10/24/2022]
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40
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Fan L, Guo Y, Zhi X, Yu X, Xu H. Stereoselective synthesis of 2α-Chloropicropodophyllotoxins and insecticidal activity of their esters against oriental armyworm, Mythimna separata walker. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:3726-3733. [PMID: 24724803 DOI: 10.1021/jf405316w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
As part of ongoing efforts to discover new natural-product-based insecticidal agents, in the present study, an efficient method for the stereoselective α-chlorination at the C-2 position of 2'(2',6')-(di)halogenopodophyllotoxin derivatives was first developed. Subsequently, a series of novel esters of 2α-chloro-2'(2',6')-(di)halogenopicropodophyllotoxin with modified C, D, and E rings of podophyllotoxin were smoothly obtained. Finally, all of the title compounds were tested against the pre-third-instar larvae of oriental armyworm (Mythimna separata Walker) at 1 mg/mL. It was found that besides their 2'-halogen-substituted E ring, the stereoselective α-chlorination at the C-2 position of 2'(2',6')-(di)halogenopodophyllotoxins was also related to the chlorination reagents. Especially 2α-chloro-4α-(benzoyl)oxy-2'-chloropicropodophyllotoxin (6e) and 2α-chloro-4α-(2-chlorophenylacyl)oxy-2'-bromopicropodophyllotoxin (8f) showed the most potent insecticidal activities, with final mortality rates of >60%. For 4α-(alkylacyl)oxy derivatives of 2α-chloro-2'(2',6')-(di)halogenopicropodophyllotoxin, the effect of the length of their side chain at the C-4 position of podophyllotoxin skeleton on the insecticidal activity was not very obvious. For 4α-(arylacyl)oxy derivatives of 2α-chloro-2'-chloro/bromopicropodophyllotoxin, an electronic effect of the substituents on their phenyl ring at the C-4 position of podophyllotoxin skeleton on the insecticidal activity was observed.
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Affiliation(s)
- Lingling Fan
- Laboratory of Pharmaceutical Design and Synthesis, College of Sciences, Northwest A&F University , Yangling 712100, Shaanxi Province People's Republic of China
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41
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Wang Y, Yu X, Zhi X, Xiao X, Yang C, Xu H. Synthesis and insecticidal activity of novel hydrazone compounds derived from a naturally occurring lignan podophyllotoxin against Mythimna separata (Walker). Bioorg Med Chem Lett 2014; 24:2621-4. [PMID: 24810569 DOI: 10.1016/j.bmcl.2014.04.074] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 04/18/2014] [Accepted: 04/19/2014] [Indexed: 10/25/2022]
Abstract
In continuation of our program aimed at the discovery and development of natural-product-based insecticidal agents, a series of novel hydrazone derivatives of podophyllotoxin, which is a naturally occurring aryltetralin lignan and isolated as the main secondary metabolite from the roots and rhizomes of Podophyllum species, were synthesized and evaluated as insecticidal agents against the pre-third-instar larvae of oriental armyworm, Mythimna separata (Walker) in vivo at 1mg/mL. Especially compounds 8i, 8j, 8t, and 8u showed the more potent insecticidal activity with the final mortality rates greater than 60%.
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Affiliation(s)
- Yi Wang
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China; College of Agriculture, Shanxi Agriculture University, Taigu 030801, Shanxi Province, People's Republic of China
| | - Xiang Yu
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
| | - Xiaoyan Zhi
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
| | - Xiao Xiao
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
| | - Chun Yang
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
| | - Hui Xu
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China.
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Liu QA, Shao CL, Gu YC, Blum M, Gan LS, Wang KL, Chen M, Wang CY. Antifouling and Fungicidal Resorcylic Acid Lactones from the Sea Anemone-Derived Fungus Cochliobolus lunatus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:3183-3191. [PMID: 24635109 DOI: 10.1021/jf500248z] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Three new 14-membered resorcylic acid lactones, cochliomycins D-F, 1-3, and eight known analogues, 4-11, were isolated from the sea anemone-derived fungus Cochliobolus lunatus. Compounds 1-4 are diastereomers differing from each other by the absolute configurations of the 4',5'-diol chiral centers. The absolute configurations of 1-4 were established by the CD exciton chirality method and TDDFT ECD calculations. In antifouling assays, 1, 3-6, and 6a exhibited potent antifouling activities against the larval settlement of the barnacle Balanus amphitrite at nontoxic concentrations, with EC50 values ranging from 1.82 to 22.5 μg/mL. Noticeably, fungicide whole-plant assays indicated that 6 showed excellent activity on the Plasmopara viticola preventative test at 6 ppm and concentration-dependent activity on the Phytophthora infestans preventative application at 200, 60, and 20 ppm. Preliminary structure-activity relationships are also discussed.
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Affiliation(s)
- Qing-Ai Liu
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Yu-Cheng Gu
- Jealott's Hill International Research Centre, Syngenta , Bracknell, Berkshire, RG42 6EY, United Kingdom
| | - Mathias Blum
- Jealott's Hill International Research Centre, Syngenta , Bracknell, Berkshire, RG42 6EY, United Kingdom
| | - Li-She Gan
- Institute of Modern Chinese Medicine, College of Pharmaceutical Sciences, Zhejiang University , Hangzhou 310058, People's Republic of China
| | - Kai-Ling Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Min Chen
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
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Zhi X, Yu X, Yang C, Ding G, Chen H, Xu H. Synthesis of 4β-acyloxypodophyllotoxin analogs modified in the C and E rings as insecticidal agents against Mythimna separata Walker. Bioorg Med Chem Lett 2014; 24:765-72. [PMID: 24412075 DOI: 10.1016/j.bmcl.2013.12.105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 12/12/2013] [Accepted: 12/24/2013] [Indexed: 10/25/2022]
Abstract
To discover the new natural-product-based insecticidal agents, four series of sixty novel 4β-acyloxypodophyllotoxin analogs modified in the C and E rings were prepared, and their insecticidal activity was tested against the pre-third-instar larvae of oriental armyworm, Mythimna separata (Walker) in vivo at the concentration of 1 mg/mL. It demonstrated that the position of the dioxo group on the E-ring of 4'-demethylepipodophyllotoxin was regioselectively controlled by the chlorine atom at its C-2' position when 2'-chloro-4'-demethylepipodophyllotoxin was oxidized by sodium periodate. Among all the derivatives, IIIi exhibited the best potent insecticidal activity with the final mortality rate of 63.3%. To alkylacyloxy series, the proper length of the side chain at the C-4 position of Ia-g, IIa-g and IIIa-g was important for their insecticidal activity.
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Affiliation(s)
- Xiaoyan Zhi
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Xiang Yu
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Chun Yang
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Guodong Ding
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Hui Chen
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Hui Xu
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, China.
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Guo Y, Qu H, Zhi X, Yu X, Yang C, Xu H. Semisynthesis and insecticidal activity of some fraxinellone derivatives modified in the B ring. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:11937-11944. [PMID: 24261313 DOI: 10.1021/jf404195m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A series of novel fraxinellone derivatives modified at the C-1 or C-8 position in the B ring were prepared as insecticidal agents against the pre-third-instar larvae of oriental armyworm, Mythimna separata Walker at 1 mg/mL. Five key steric configurations of compounds 2, 3, and 8f,g,j were further determined by single-crystal X-ray diffraction. It was found that the kinds and the amount of the reduction products of fraxinellone were related to the molar ratio between the reduction agent Red-Al and the substrate fraxinellone. Among all of the derivatives, compounds 2 and 8i,j,o displayed more promising insecticidal activity than their precursors fraxinellone and toosendanin. The preliminary structure-activity relationships revealed that the lactone (B-ring) of fraxinellone contributed to the observed insecticidal activity; the double bond at the C-2 position of fraxinellone was not necessary for the insecticidal activity; conversion of the oxygen atom of carbonyl group on the lactone of fraxinellone to a sulfur one does not improve the insecticidal activity; introduction of electron-withdrawing groups on the phenyl ring of 8f, to the benzoyloxy series, could result in more potent compounds.
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Affiliation(s)
- Yong Guo
- Laboratory of Pharmaceutical Design and Synthesis, College of Sciences, Northwest A&F University , Yangling 712100, Shaanxi Province, People's Republic of China
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Semisynthesis and quantitative structure–activity relationship (QSAR) study of some cholesterol-based hydrazone derivatives as insecticidal agents. Bioorg Med Chem Lett 2013; 23:4806-12. [DOI: 10.1016/j.bmcl.2013.06.099] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 06/24/2013] [Accepted: 06/28/2013] [Indexed: 11/17/2022]
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46
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Che Z, Yu X, Zhi X, Fan L, Yao X, Xu H. Synthesis of novel 4α-(acyloxy)-2'(2',6')-(di)halogenopodophyllotoxin derivatives as insecticidal agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:8148-8155. [PMID: 23915199 DOI: 10.1021/jf4025079] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In continuation of our program aimed at the discovery and development of natural-product-based insecticidal agents, we have prepared three series of novel 4α-(acyloxy)-2'(2',6')-(di)halogenopodophyllotoxin derivatives modified in the C and E rings of podophyllotoxin, which is a naturally occurring aryltetralin lignan isolated from the roots and rhizomes of Podophyllum hexandrum . Their structures were well characterized by (1)H NMR, HRMS, ESI-MS, optical rotation, and mp. The stereochemical configurations of compounds 5s, 6b, 6d, and 7q were unambiguously confirmed by single-crystal X-ray diffraction. Their insecticidal activity was evaluated against the pre-third-instar larvae of oriental armyworm, Mythimna separata Walker, in vivo at a concentration of 1 mg/mL. These derivatives likely displayed the antimolting hormone effect. Among all the derivatives, especially compounds 5a, 5n, 7f, 7n, and 7w exhibited the most potent insecticidal activity with final mortality rates of 70% or so. This suggested that a chlorine or bromine atom introduced at the C2' or C2' and C6' positions on the E ring of podophyllotoxin was necessary for obtaining the potent compounds. This will pave the way for further design, structural modification, and development of podophyllotoxin derivatives as insecticidal agents.
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Affiliation(s)
- Zhiping Che
- Laboratory of Pharmaceutical Design & Synthesis, College of Sciences, Northwest A&F University, Yangling 712100, Shaanxi Province, People's Republic of China
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Simonetti SO, Larghi EL, Bracca ABJ, Kaufman TS. Angular tricyclic benzofurans and related natural products of fungal origin. Isolation, biological activity and synthesis. Nat Prod Rep 2013; 30:941-69. [PMID: 23719995 DOI: 10.1039/c3np70014c] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Naturally-occurring angular tricyclic benzofuran/isobenzofuran derivatives of fungal origin and related compounds, in which two heterocyclic rings are fused to a central benzenoid moiety, are covered. Emphasis is placed on the structure of the compounds, together with their relevant biological activities, source microorganisms, country or region of origin and environmental conditions. In addition, proposed biosynthetic pathways, as well as the total syntheses of some of the compounds, including those that lead to structural revision or to correct stereochemical assignments, and related synthetic efforts, are discussed in detail.
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Affiliation(s)
- Sebastián O Simonetti
- Instituto de Química Rosario-CONICET-UNR, Suipacha 531, S2002LRK, Rosario, SF, Argentina
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Affiliation(s)
- Jin-Ming Gao
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, Department of Chemistry and Chemical Engineering, College of Science, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi, China.
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Zhang Y, Wang JS, Wang XB, Gu YC, Wei DD, Guo C, Yang MH, Kong LY. Limonoids from the fruits of Aphanamixis polystachya (Meliaceae) and their biological activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:2171-2182. [PMID: 23388043 DOI: 10.1021/jf3049774] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Seven new prieurianin-type limonoids, aphapolynins C-I (1-7), and a new aphanamolide-type limonoid, aphanamolide B (8), along with seventeen known compounds, were isolated from the fruits of Aphanamixis polystachya. The structures of these compounds were established on the basis of spectroscopic studies. The absolute configurations were determined by combination of electronic circular dichroism (ECD) calculation, CD exciton chirality method, and single crystal X-ray diffraction. All these isolates were evaluated for their cytotoxicities against three human cancer cell lines, for their inhibitory effects on lipopolysaccharide (LPS) induced RAW264.7 murine macrophages, and for their fungicidal, herbicidal, and insecticidal activities. Compounds 1, 14, 16, and 17 exhibited significant fungicidal activities; 1 and 25 in particular showed good insecticidal activities. The α,β-unsaturated lactone and 14,15-epoxy ring moieties were essential for the insecticidal activity.
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Affiliation(s)
- Yao Zhang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
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