1
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Qian JC, Zhang HP, Wang Y, Liu D. Heating conversion of indole-3-carbinol into N-substituted oligomers with anti-melanoma effect. Food Chem X 2024; 22:101410. [PMID: 38707780 PMCID: PMC11068521 DOI: 10.1016/j.fochx.2024.101410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/21/2024] [Accepted: 04/22/2024] [Indexed: 05/07/2024] Open
Abstract
Cruciferous vegetables (CVs) are globally consumed with some health benefits believed to arise from indole-3-carbinol (I3C), a labile phytochemical liberated from indole glucosinolates, but few reports describe the effect of cooking on I3C reactions. Here, we present heat-promoted direct conversions of I3C in broccoli florets into indole derivatives, which are unique in the N-indolylmethylation and -hydroxymethylation of indole nuclei by 3-methyleneindole and formaldehyde formed in situ from the I3C dehydration and the dimerization of I3C to 3,3'-diindolylmethane (DIM), respectively. Such N-substituted indoles were found in a range of 0.4-4.6 μg per gram of steamed broccoli florets, with a novel compound N-(indol-3-ylmethyl)-3,3'-diindolylmethane (DIM-1) bio-evaluated to inhibit A375 cells with an IC50 value of 1.87 μM. In aggregation, the investigation discloses the promoting effect of heating on the I3C transformation in CVs and identifies DIM-1 as an anti-cancer drug candidate, and thus updates the knowledge of I3C and bioactive derivatives thereof.
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Affiliation(s)
| | | | - Yi Wang
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Dan Liu
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
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2
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Zhang Y, Qian J, Jiang M, Yang S, Zhou L, Zhang Q, Lin L, Yang Y. LTe2 induces cell apoptosis in multiple myeloma by suppressing AKT phosphorylation at Thr308 and Ser473. Front Oncol 2023; 13:1269670. [PMID: 37781194 PMCID: PMC10539572 DOI: 10.3389/fonc.2023.1269670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 08/30/2023] [Indexed: 10/03/2023] Open
Abstract
Multiple myeloma (MM) is a highly heterogeneous hematological malignancy originating from B lymphocytes, with a high recurrence rate primarily due to drug resistance. 2-((1H-indol-3-yl)methyl)-3-((3-((1H-indol-3-yl)methyl)-1H-indol-2-yl)methyl)-1H-indole (LTe2), a tetrameric indole oligomer, possesses a wide range of anticancer activities through various mechanisms. Here, we aim to explore the anti-tumor efficiency and potential downstream targets of LTe2 in MM. Its bioactivity was assessed by employing MTT assays, flow cytometry, and the 5TMM3VT mouse model. Additionally, transcriptomic RNA-seq analysis and molecular dynamics (MD) experiments were conducted to elucidate the mechanism underlying LTe2 induced MM cell apoptosis. The results demonstrated that LTe2 significantly inhibited MM cell proliferation both in vitro and in vivo, and revealed that LTe2 exerts its effect by inhibiting the phosphorylation of AKT at the Thr308 and Ser473 sites. In summary, our findings highlight the potential of LTe2 as a novel candidate drug for MM treatment and provided a solid foundation for future clinical trials involving LTe2.
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Affiliation(s)
- Yuanjiao Zhang
- Nanjing Hospital of Chinese Medicine and School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jiacheng Qian
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Mingmei Jiang
- Nanjing Hospital of Chinese Medicine and School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shu Yang
- Nanjing Hospital of Chinese Medicine and School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Lianxin Zhou
- Nanjing Hospital of Chinese Medicine and School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Qin Zhang
- Department of Gynecology, Jiangsu Province Hospital Affiliated Hospital of Nanjing Unviersity of Chinese Medicina, Nanjing, China
| | - Liping Lin
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ye Yang
- Nanjing Hospital of Chinese Medicine and School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
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3
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Lin LP, Wu M, Jiang N, Wang W, Tan RX. Carbon-nitrogen bond formation to construct novel polyketide-indole hybrids from the indole-3-carbinol exposed culture of Daldinia eschscholzii. Synth Syst Biotechnol 2022; 7:750-755. [PMID: 35387230 PMCID: PMC8943216 DOI: 10.1016/j.synbio.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 01/29/2022] [Accepted: 02/07/2022] [Indexed: 11/26/2022] Open
Abstract
A plenty of cytochrome P450s have been annotated in the Daldinia eschosholzii genome. Inspired by the fact that some P450s have been reported to catalyze the carbon-nitrogen (C–N) bond formation, we were curious about whether hybrids through C–N bond formation could be generated in the indole-3-carbinol (I3C) exposed culture of D. eschscholzii. As expected, two skeletally undescribed polyketide-indole hybrids, designated as indolpolyketone A and B (1 and 2), were isolated and assigned to be constructed through C–N bond formation. Their structures were elucidated by 1D and 2D NMR spectra. The absolute configurations of 1 and 2 were determined by comparing the recorded and calculated electronic circular dichroism (ECD) spectra. Furthermore, the plausible biosynthetic pathways for 1 and 2 were proposed. Compounds 1 and 2 exhibited significant antiviral activity against H1N1 with IC50 values of 45.2 and 31.4 μM, respectively. In brief, compounds 1 and 2 were reported here for the first time and were the first example of polyketide-indole hybrids pieced together through C–N bond formation in the I3C-exposed culture of D. eschscholzii. Therefore, this study expands the knowledge about the chemical production of D. eschscholzii through precursor-directed biosynthesis (PDB).
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4
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Lin LP, Liu D, Qian JC, Wu L, Zhao Q, Tan RX. Post-ingestion conversion of dietary indoles into anticancer agents. Natl Sci Rev 2021; 9:nwab144. [PMID: 35505660 PMCID: PMC9053945 DOI: 10.1093/nsr/nwab144] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 05/03/2021] [Accepted: 07/08/2021] [Indexed: 11/12/2022] Open
Abstract
There are health benefits from consuming cruciferous vegetables that release indole-3-carbinol (I3C), but the in vivo transformation of I3C-related indoles remains underinvestigated. Here we detail the post-ingestion conversion of I3C into antitumor agents, 2-(indol-3-ylmethyl)-3,3′-diindolylmethane (LTr1) and 3,3′-diindolylmethane (DIM), by conceptualizing and materializing the reaction flux derailing (RFD) approach as a means of unraveling these stepwise transformations to be non-enzymatic but pH-dependent and gut microbe-sensitive. In the upper (or acidic) gastrointestinal tract, LTr1 is generated through Michael addition of 3-methyleneindolium (3MI, derived in situ from I3C) to DIM produced from I3C via the formaldehyde-releasing (major) and CO2-liberating (minor) pathways. In the large intestine, ‘endogenous’ I3C and DIM can form, respectively, from couplings of formaldehyde with one and two molecules of indole (a tryptophan catabolite). Acid-producing gut bacteria such as Lactobacillus acidophilus facilitate the H+-promotable steps. This work updates our understanding of the merits of I3C consumption and identifies LTr1 as a drug candidate.
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Affiliation(s)
- Li Ping Lin
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, Nanjing University, Nanjing 210023, China
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Dan Liu
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jia Cheng Qian
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Liang Wu
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Quan Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, Nanjing University, Nanjing 210023, China
| | - Ren Xiang Tan
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, Nanjing University, Nanjing 210023, China
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
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5
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New secondary metabolites with immunosuppressive and BChE inhibitory activities from an endophytic fungus Daldinia sp. TJ403-LS1. Bioorg Chem 2021; 114:105091. [PMID: 34153809 DOI: 10.1016/j.bioorg.2021.105091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/07/2021] [Accepted: 06/10/2021] [Indexed: 11/22/2022]
Abstract
Five new acetylenic phenol derivatives (1-4 and 7), one new benzofuran derivative (8), one new naphthol derivative (9), and two known analogues (5 and 6), were isolated and identified from an endophytic fungus Daldinia sp. TJ403-LS1 that was isolated from the medicinally valuable plant Anoectochilus roxburghii. Their structures were elucidated by means of extensive spectroscopic analyses and electronic circular dichroism (ECD) calculations. In addition, compound 1 exhibited remarkable immunosuppressive activity against LPS and anti-CD3/anti-CD28 mAbs activated murine splenocytes proliferation with the same IC50 values of 0.06 μM and BChE inhibitory activity with an IC50 value of 6.93 ± 0.71 μM, and compounds 6, 8 and 9 showed excellent BChE inhibitory activity with IC50 values of 16.00 ± 0.30, 23.33 ± 0.55, and 15.53 ± 0.39 μM, respectively (positive drug neostigmine, IC50 = 49.60 ± 6.10 μM), highlighting the promising potentials to be designed and developed as immunosuppressive and BChE inhibitory agents.
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6
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Wutthiwong N, Suthiphasilp V, Pintatum A, Suwannarach N, Kumla J, Lumyong S, Maneerat T, Charoensup R, Cheenpracha S, Limtharakul T, Pyne SG, Laphookhieo S. Daldiniaeschsone A, a Rare Tricyclic Polyketide Having a Chromone Unit Fused to a δ-Lactone and Its Symmetrical Biphenyl Dimer, Daldiniaeschsone B, from an Endophytic Fungus Daldinia eschscholtzii SDBR-CMUNKC745. J Fungi (Basel) 2021; 7:358. [PMID: 34063266 PMCID: PMC8147462 DOI: 10.3390/jof7050358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 11/17/2022] Open
Abstract
Daldiniaeschsone A (1), a rare tricyclic polyketide having a chromone unit fused to a δ-lactone and its symmetrical 6,6'-biphenyl dimer, daldiniaeschsone B (2), together with three known compounds (3-5), were isolated from a plant-derived endophytic fungus, Daldinia eschscholtzii SDBR-CMUNKC745. Their structures were elucidated by extensive 1D and 2D NMR spectroscopic data and HRESIMS. All compounds showed α-glucosidase inhibitory activity with IC50 values ranging from 0.16-0.85 mM and compound 1 was the best α-glucosidase inhibitory activity (IC50 = 0.16 mM).
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Affiliation(s)
- Natnicha Wutthiwong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Virayu Suthiphasilp
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
| | - Aknarin Pintatum
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
| | - Nakarin Suwannarach
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jaturong Kumla
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand
| | - Tharakorn Maneerat
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
| | - Rawiwan Charoensup
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
- School of Integrative Medicine, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | | | - Thunwadee Limtharakul
- Department of Chemistry, Faculty of Science and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Stephen G. Pyne
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia;
| | - Surat Laphookhieo
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
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7
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Guo S, Chen J, Yi M, Dong L, Lin A, Yao H. An approach to unsymmetrical 3,3′-diindolylmethanes through Pd-catalyzed cascade Heck cyclization of allenamides and o-ethynylanilines. Org Chem Front 2021. [DOI: 10.1039/d0qo01539c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A highly efficient synthesis of unsymmetrical 3,3′-diindolylmethanes has been developed by palladium-catalyzed cascade Heck/cyclization reaction.
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Affiliation(s)
- Songjin Guo
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Jiayi Chen
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Mingjun Yi
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Liuli Dong
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Aijun Lin
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Hequan Yao
- State Key Laboratory of Natural Medicines (SKLNM) and Department of Medicinal Chemistry
- School of Pharmacy
- China Pharmaceutical University
- Nanjing
- P. R. China
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8
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Singh A, Kaur G, Banerjee B. Recent Developments on the Synthesis of Biologically Significant bis/tris(indolyl)methanes under Various Reaction Conditions: A Review. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200228092752] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Bis(indolyl)methane skeleton is the main building block of many naturally occurring bioactive compounds. Bis(indolyl)methanes are found to possess a wide range of pharmaceuitical efficacies. These important scaffolds are being used as anti-cancer, antioxidant, anti-bacterial, anti-inflammatory, and anti-proliferative agents. In this review, we summarized the latest developments on the synthesis of various bis/tris(indolyl)methane derivatives from the reactions of two equivalents of indoles and one equivalent of aldehydes or indole-3-carbaldehydes under various reaction conditions. More than hundred different catalysts were employed for these transformations which include various metal catalysts, ionic liquids, organocatalysts, surfactants, homogeneous, heterogeneous catalysts etc.
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Affiliation(s)
- Arvind Singh
- Department of Chemistry, Indus International University, Village and Post Office Bathu, District Una, Himachal Pradesh, 174301, India
| | - Gurpreet Kaur
- Department of Chemistry, Indus International University, Village and Post Office Bathu, District Una, Himachal Pradesh, 174301, India
| | - Bubun Banerjee
- Department of Chemistry, Indus International University, Village and Post Office Bathu, District Una, Himachal Pradesh, 174301, India
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9
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Singh A, Kaur G, Kaur A, Gupta VK, Banerjee B. A General Method for the Synthesis of 3,3-bis(indol-3-yl)indolin-2-ones, bis(indol-3-yl)(aryl)methanes and tris(indol-3-yl)methanes Using Naturally Occurring Mandelic Acid as an Efficient Organo-catalyst in Aqueous Ethanol at Room Temperature. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107666200228125715] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A simple, facile, straightforward and environmentally benign protocol has been developed for the efficient synthesis of pharmaceutically interesting 3,3-bis(indol-3-yl)indolin-2-ones, bis(indol- 3-yl)(aryl)methanes and tris(indol-3-yl)methanes using a catalytic amount of mandelic acid as an efficient, naturally occurring, low-cost, commercially available organo-catalyst in aqueous ethanol at room temperature.
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Affiliation(s)
- Arvind Singh
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174301, India
| | - Gurpreet Kaur
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174301, India
| | - Amninder Kaur
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174301, India
| | - Vivek K. Gupta
- Post-Graduate Department of Physics, University of Jammu, Jammu Tawi-180006, India
| | - Bubun Banerjee
- Department of Chemistry, Indus International University, V.P.O. Bathu, Distt. Una, Himachal Pradesh-174301, India
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10
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Chehardoli G, Bahmani A. Synthetic strategies, SAR studies, and computer modeling of indole 2 and 3-carboxamides as the strong enzyme inhibitors: a review. Mol Divers 2020; 25:535-550. [PMID: 32394235 PMCID: PMC7214098 DOI: 10.1007/s11030-020-10061-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/21/2020] [Indexed: 02/08/2023]
Abstract
Abstract Indole derivatives have been the focus of many researchers in the study of pharmaceutical compounds for many years. Researchers have investigated the effect of carboxamide moiety at positions 2 and 3, giving unique inhibitory properties to these compounds. The presence of carboxamide moiety in indole derivatives causes hydrogen bonds with a variety of enzymes and proteins, which in many cases, inhibits their activity. In this review, synthetic strategies of indole 2 and 3-carboxamide derivatives, the type, and mode of interaction of these derivatives against HLGP, HIV-1, renin enzyme, and structure–activity studies of these compounds were investigated. It is hoped that indole scaffolds will be tested in the future for maximum activity in pharmacological compounds. Graphic abstract ![]()
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Affiliation(s)
- Gholamabbas Chehardoli
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
| | - Asrin Bahmani
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
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11
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Liao HX, Zheng CJ, Huang GL, Mei RQ, Nong XH, Shao TM, Chen GY, Wang CY. Bioactive Polyketide Derivatives from the Mangrove-Derived Fungus Daldinia eschscholtzii HJ004. JOURNAL OF NATURAL PRODUCTS 2019; 82:2211-2219. [PMID: 31373815 DOI: 10.1021/acs.jnatprod.9b00241] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Five new tetralones, daldiniones A-E (1-5), three new chromones, 7-hydroxy-5-methoxy-2,3-dimethylchromone (9), 5-methoxy-2-propylchromone (10), and 7-ethyl-8-hydroxy-6-methoxy-2,3-dimethylchromone (11), and two new lactones, helicascolides D and E (16 and 17), together with nine known metabolites (6-8, 12-15, and 18-19) were isolated from the mangrove-derived fungus Daldinia eschscholtzii HJ004. The structures and absolute configurations of the new compounds were determined by analyzing MS and NMR data and utilizing GIAO based 13C NMR chemical shift calculations and quantum chemical electronic circular dichroism (ECD) calculations. Compounds 9, 13, and 18 showed inhibitory activities against α-glucosidase with IC50 values of 13, 15, and 16 μM, respectively.
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Affiliation(s)
- Hai-Xia Liao
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering , Hainan Normal University , Haikou , Hainan 571158 , People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province , Haikou , Hainan 571158 , People's Republic of China
- 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
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science , Yulin Normal University , Yulin , Guangxi 537000 , People's Republic of China
| | - Cai-Juan Zheng
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering , Hainan Normal University , Haikou , Hainan 571158 , People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province , Haikou , Hainan 571158 , People's Republic of China
| | - Guo-Lei Huang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering , Hainan Normal University , Haikou , Hainan 571158 , People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province , Haikou , Hainan 571158 , People's Republic of China
| | - Rong-Qing Mei
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering , Hainan Normal University , Haikou , Hainan 571158 , People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province , Haikou , Hainan 571158 , People's Republic of China
| | - Xu-Hua Nong
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering , Hainan Normal University , Haikou , Hainan 571158 , People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province , Haikou , Hainan 571158 , People's Republic of China
| | - Tai-Ming Shao
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering , Hainan Normal University , Haikou , Hainan 571158 , People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province , Haikou , Hainan 571158 , People's Republic of China
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science , Yulin Normal University , Yulin , Guangxi 537000 , People's Republic of China
| | - Guang-Ying Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering , Hainan Normal University , Haikou , Hainan 571158 , People's Republic of China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province , Haikou , Hainan 571158 , 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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12
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Kim Y, Lee J, Jung J, Kim SG. Chiral Brønsted acid-catalyzed Friedel–Crafts reaction of 3-indolylsulfamidates with indoles: Synthesis of enantioenriched bisindolylmethane sulfamates. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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Lin L, Jiang N, Wu H, Mei Y, Yang J, Tan R. Cytotoxic and antibacterial polyketide-indole hybrids synthesized from indole-3-carbinol by Daldinia eschscholzii. Acta Pharm Sin B 2019; 9:369-380. [PMID: 30972283 PMCID: PMC6437554 DOI: 10.1016/j.apsb.2018.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/25/2018] [Accepted: 09/07/2018] [Indexed: 12/11/2022] Open
Abstract
Two skeletally undescribed polyketide-indole hybrids (PIHs), named indolchromins A and B, were generated from indole-3-carbinol (I3C) in the fungal culture (Daldinia eschscholzii). The indolchromin structures were elucidated mainly by their 1D and 2D NMR spectra with the former confirmed by the single-crystal X-ray crystallographic analysis. Each indolchromin alkaloid was chirally separated into four isomers, whose absolute configurations were assigned by comparing the recorded circular dichroism (CD) spectra with the electronic CD (ECD) curves computed for all optional stereoisomers. Furthermore, the indolchromin construction pathways in fungal culture were clarified through enzyme inhibition, precursor feeding experiment, and energy calculation. The cascade reactions, including decarboxylative Claisen condensation catalyzed by 8-amino-7-oxononanoate synthase (AONS), C(sp3)-H activation, double bond migration, and Michael addition, all undergone compatibly during the fungal cultivation. In an MIC range of 1.3–8.6 μmol/L, (2S,4R)- and (2R,4S)-indolchromin A and (2R,4S)-indolchromin B are inhibitory against Clostridium perfringens, Clostridium difficile, Veillonella sp., Bacteroides fragilis, and Streptococcus pyogenes. (2R,4S)-Indolchromin A and (2S,4S)-indolchromin B were cytotoxic against the human breast cancer cell line MDA-MB-231 with IC50 values of 27.9 and 131.2 nmol/L, respectively, with the former additionally active against another human breast cancer cell line MCF-7 (IC50 94.4 nmol/L).
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14
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Zhou ZZ, Zhu HJ, Lin LP, Zhang X, Ge HM, Jiao RH, Tan RX. Dalmanol biosyntheses require coupling of two separate polyketide gene clusters. Chem Sci 2018; 10:73-82. [PMID: 30746075 PMCID: PMC6335865 DOI: 10.1039/c8sc03697g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 11/21/2018] [Indexed: 11/29/2022] Open
Abstract
Polyketide–polyketide hybrids are unique natural products with promising bioactivity, but the hybridization processes remain poorly understood.
Polyketide–polyketide hybrids are unique natural products with promising bioactivity, but the hybridization processes remain poorly understood. Herein, we present that the biosynthetic pathways of two immunosuppressants, dalmanol A and acetodalmanol A, result from an unspecific monooxygenase triggered hybridization of two distinct polyketide (naphthalene and chromane) biosynthetic gene clusters. The orchestration of the functional dimorphism of the polyketide synthase (ChrA) ketoreductase (KR) domain (shortened as ChrA KR) with that of the KR partner (ChrB) in the bioassembly line increases the polyketide diversity and allows the fungal generation of plant chromanes (e.g., noreugenin) and phloroglucinols (e.g., 2,4,6-trihydroxyacetophenone). The simultaneous fungal biosynthesis of 1,3,6,8- and 2-acetyl-1,3,6,8-tetrahydroxynaphthalenes was addressed as well. Collectively, the work may symbolize a movement in understanding the multiple-gene-cluster involved natural product biosynthesis, and highlights the possible fungal generations of some chromane- and phloroglucinol-based phytochemicals.
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Affiliation(s)
- Zhen Zhen Zhou
- State Key Laboratory of Pharmaceutical Biotechnology , Institute of Functional Biomolecules , Nanjing University , Nanjing 210023 , China .
| | - Hong Jie Zhu
- State Key Laboratory of Pharmaceutical Biotechnology , Institute of Functional Biomolecules , Nanjing University , Nanjing 210023 , China .
| | - Li Ping Lin
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing 210023 , China.,State Key Laboratory Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , China
| | - Xuan Zhang
- State Key Laboratory of Pharmaceutical Biotechnology , Institute of Functional Biomolecules , Nanjing University , Nanjing 210023 , China .
| | - Hui Ming Ge
- State Key Laboratory of Pharmaceutical Biotechnology , Institute of Functional Biomolecules , Nanjing University , Nanjing 210023 , China .
| | - Rui Hua Jiao
- State Key Laboratory of Pharmaceutical Biotechnology , Institute of Functional Biomolecules , Nanjing University , Nanjing 210023 , China .
| | - Ren Xiang Tan
- State Key Laboratory of Pharmaceutical Biotechnology , Institute of Functional Biomolecules , Nanjing University , Nanjing 210023 , China . .,State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing 210023 , China
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15
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Maestro A, Martín-Encinas E, Alonso C, Martinez de Marigorta E, Rubiales G, Vicario J, Palacios F. Synthesis of novel antiproliferative hybrid bis-(3-indolyl)methane phosphonate derivatives. Eur J Med Chem 2018; 158:874-883. [PMID: 30253344 DOI: 10.1016/j.ejmech.2018.09.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/04/2018] [Accepted: 09/04/2018] [Indexed: 12/24/2022]
Abstract
An efficient synthetic methodology for the preparation of phosphorus substituted bis-(3-indolyl)methane through a double nucleophilic addition of indole derivatives to an in situ generated α-iminophosphonate is reported. In addition, bis-(3-indolyl)methane substrates showed in vitro cytotoxicity, inhibiting the growth of carcinoma human tumor cell lines A549 (carcinomic human alveolar basal epithelial cell) and SKOV03 (human ovarian carcinoma).
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16
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Lin LP, Tan RX. Bioactive Alkaloids from Indole-3-carbinol Exposed Culture of Daldiniaeschscholzii. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800160] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Li Ping Lin
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy; Nanjing University of Chinese Medicine; Nanjing Jiangsu 210023 China
| | - Ren Xiang Tan
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy; Nanjing University of Chinese Medicine; Nanjing Jiangsu 210023 China
- Institute of Functional Biomolecules, State Key Laboratory of Pharmaceutical Biotechnology; Nanjing University; Nanjing Jiangsu 210023 China
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17
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Reactivity of indole-3-alkoxides in the absence of acids: Rapid synthesis of homo-bisindolylmethanes. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Karmakar S, Das P, Ray D, Ghosh S, Chattopadhyay SK. Ag(I)-Catalyzed Domino Cyclization–Addition Sequence with Simultaneous Carbonyl and Alkyne Activation as a Route to 2,2′-Disubstituted Bisindolylarylmethanes. Org Lett 2016; 18:5200-5203. [PMID: 27709960 DOI: 10.1021/acs.orglett.6b02321] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Swastik Karmakar
- Department
of Chemistry, Basirhat College, Basirhat 743412, West Bengal India
| | - Prasanta Das
- Department
of Chemistry, Basirhat College, Basirhat 743412, West Bengal India
| | - Debjyoti Ray
- Department
of Chemistry, Basirhat College, Basirhat 743412, West Bengal India
| | - Subhankar Ghosh
- Department
of Chemistry, University of Kalyani, Kalyani 741235, West Bengal India
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19
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Yang RX, Zhao YC, Kong LB, Yan SJ, Lin J. Simple Synthesis of Multi-Halogen Pyrazino[1,2- a]indole-1,8(2 H,5 aH)-diones. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Rui-Xia Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 PR China
| | - Yu-Cheng Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 PR China
| | - Ling-Bin Kong
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 PR China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 PR China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry Education, School of Chemical Science and Technology; Yunnan University; Kunming 650091 PR China
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20
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Sousa JPB, Aguilar-Pérez MM, Arnold AE, Rios N, Coley PD, Kursar TA, Cubilla-Rios L. Chemical constituents and their antibacterial activity from the tropical endophytic fungus Diaporthe sp. F2934. J Appl Microbiol 2016; 120:1501-8. [PMID: 26991693 DOI: 10.1111/jam.13132] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 03/07/2016] [Accepted: 03/08/2016] [Indexed: 01/28/2023]
Abstract
AIMS To isolate, characterize and determine the antibacterial activities of compounds produced by the endophytic fungus Diaporthe sp. F2934, cultivated on malt extract agar. METHODS AND RESULTS The fungus was cultivated aseptically in Petri dishes containing malt extract agar at 25°C for 15 days. Crude extract was obtained from mycelium using ethyl acetate and sonication, and was fractioned using classic chromatography and HPLC. The structures of phomosines and chromanones were established by NMR experiments including HMQC, HMBC and COSY. Their molecular formulas were determined by ESI-TOFMS. We obtained six compounds: (1) 4H-1-benzopyra-4-one-2,3-dihydro-5-hydroxy-2,8-dimetyl, (2) 4H-1-benzopyran-4-one-2,3-dihydro-5-hydroxy-8-(hydroxylmethyl)-2-methyl, (3) 4H-1-benzopyra-4-one-2,3-dihydro-5-methoxyl-2,8-dimetyl, (4) phomosine A, (5) phomosine D and (6) phomosine C. Isolated compounds 1, 2 and 5 were inactive against 15 micro-organisms, but phomosines A and C were active against diverse Gram-negative and Gram-positive bacteria. CONCLUSIONS A group of new chromanones and known phomosines have been isolated from the genus Diaporthe (Diaporthe sp. F2934). The results obtained confirm the wide chemical diversity produced by endophytic fungi, specifically the genus Diaporthe. In addition, phomosines A and C may be considered as antimicrobial agents that can be used to guide the development of new antibiotics. SIGNIFICANCE AND IMPACT OF THE STUDY Our phylogenetic analysis places Diaporthe sp. F2934 as sister to the Diaporthe cynaroidis clade. Three chromanones were isolated and identified, for the first time, using crude extract obtained from Diaporthe F2934. From this extract phomosines A, C and D were also purified. Regarding Staphylococcus aureus, the inhibition zone diameter (IZD) for phomosine A was 20% higher than the standard drug, vancomycin. When cultivated as described here, Diaporthe sp. F2934 produced new and antimicrobial compounds.
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Affiliation(s)
- J P B Sousa
- Smithsonian Tropical Research Institute, Panama City, Panama
| | - M M Aguilar-Pérez
- Smithsonian Tropical Research Institute, Panama City, Panama.,Laboratory of Tropical Bioorganic Chemistry, Faculty of Natural and Exact Sciences and Technology, University of Panama, Panama City, Panama
| | - A E Arnold
- School of Plant Sciences and Department of Ecology and Evolutionary Biology, The University of Arizona, Tucson, AZ, USA
| | - N Rios
- Department of Microbiology, University of Panama, Panama City, Panama
| | - P D Coley
- Department of Biology, University of Utah, Salt Lake City, UT, USA
| | - T A Kursar
- Department of Biology, University of Utah, Salt Lake City, UT, USA
| | - L Cubilla-Rios
- Smithsonian Tropical Research Institute, Panama City, Panama.,Laboratory of Tropical Bioorganic Chemistry, Faculty of Natural and Exact Sciences and Technology, University of Panama, Panama City, Panama
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21
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Han WB, Zhang AH, Deng XZ, Lei X, Tan RX. Curindolizine, an Anti-Inflammatory Agent Assembled via Michael Addition of Pyrrole Alkaloids Inside Fungal Cells. Org Lett 2016; 18:1816-9. [DOI: 10.1021/acs.orglett.6b00549] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Wen Bo Han
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
| | - Ai Hua Zhang
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
- State
Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Xin Zhao Deng
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
| | - Xinxiang Lei
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Ren Xiang Tan
- Institute
of Functional Biomolecules, State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing 210093, China
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22
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Wang WB, Zhu YS, Guo SQ, Wang QL, Bu ZW. A FeCl3-catalyzed highly regioselective 1,2-addition/substitution sequence for the construction of coumarin-substituted bis(indolyl)methanes. Org Biomol Chem 2016; 14:4420-5. [DOI: 10.1039/c6ob00515b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A FeCl3-catalyzed highly regioselective 1,2-addition/substitution sequence of 3-acetylcoumarins and indoles has been developed to afford highly hindered coumarin-substituted bis(indolyl)methanes.
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Affiliation(s)
- Wen-Bo Wang
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Yan-Shuo Zhu
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Sheng-Qiang Guo
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Qi-Lin Wang
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
| | - Zhan-Wei Bu
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
- China
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23
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Abstract
The background information about the discovery of artemisinin-based antimalarials is provided along with authors' viewpoint towards the extractability of modern medicines from natural products.
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Affiliation(s)
- Ling Yi Kong
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Ren Xiang Tan
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing 210093
- China
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