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Teng SQ, Zhang XF, Li HF, Luo XW, Zhou YS, Liu H, Liu JK, Feng T. Boerechalasins A-G, cytochalasans from the fungus Boeremia exigua with anti-inflammatory and cytotoxic activities. Phytochemistry 2023; 215:113861. [PMID: 37726084 DOI: 10.1016/j.phytochem.2023.113861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/12/2023] [Accepted: 09/16/2023] [Indexed: 09/21/2023]
Abstract
Seven previously undescribed cytochalasans, namely, boerechalasins A-G, together with one analogue, were characterized from the solid culture of the fungus Boeremia exigua. Their structures and absolute configurations were elucidated on the basis of extensive spectroscopic analysis as well as electronic circular dichroism calculations. Remarkably, boerechalasin F possessed an unusual sulfoxide moiety that might be derived from methionine, while boerechalasin G had an unusual 5-methylcyclohexane-1,2,3-triol substituent at N-2 position. Boerechalasins A and E exhibited inhibitory activities against nitric oxide production in LPS-induced RAW264.7 macrophages with IC50 values of 21.9 and 5.7 μM, respectively. Boerechalasin F displayed cytotoxicity against human MCF‒7 cells with an IC50 value of 22.8 μM.
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Affiliation(s)
- Si-Qiong Teng
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Xiao-Fang Zhang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Hong-Fei Li
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Xin-Wen Luo
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Yang-Sha Zhou
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Hui Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China.
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central Minzu University, Wuhan, 430074, China.
| | - Tao Feng
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan, 430074, China; National Demonstration Center for Experimental Ethnopharmacology Education, South-Central Minzu University, Wuhan, 430074, China; International Cooperation Base for Active Substances in Traditional Chinese Medicine in Hubei Province, Wuhan, 430074, China.
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Rao QR, Rao JB, Zhao M. Chemical diversity and biological activities of specialized metabolites from the genus Chaetomium: 2013-2022. Phytochemistry 2023; 210:113653. [PMID: 36972807 DOI: 10.1016/j.phytochem.2023.113653] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/19/2023] [Accepted: 03/22/2023] [Indexed: 06/18/2023]
Abstract
Chaetomium (Chaetomiaceae), a large fungal genus consisting of at least 400 species, has been acknowledged as a promising resource for the exploration of novel compounds with potential bioactivities. Over the past decades, emerging chemical and biological investigations have suggested the structural diversity and extensive potent bioactivity of the specialized metabolites in the Chaetomium species. To date, over 500 compounds with diverse chemical types have been isolated and identified from this genus, including azaphilones, cytochalasans, pyrones, alkaloids, diketopiperazines, anthraquinones, polyketides, and steroids. Biological research has indicated that these compounds possess a broad range of bioactivities, including antitumor, anti-inflammatory, antimicrobial, antioxidant, enzyme inhibitory, phytotoxic, and plant growth inhibitory activities. This paper summarizes current knowledge referring to the chemical structure, biological activity, and pharmacologic potency of the specialized metabolites in the Chaetomium species from 2013 to 2022, which might provide insights for the exploration and utilization of bioactive compounds in this genus both in the scientific field and pharmaceutical industry.
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Affiliation(s)
- Qian-Ru Rao
- Laboratory of Metabolomics and Drug-Induced Liver Injury, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China; Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Jian-Bo Rao
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Chinese Medicine, Nanchang, 330004, People's Republic of China
| | - Min Zhao
- Laboratory of Metabolomics and Drug-Induced Liver Injury, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China.
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Hinterdobler W, Bacher M, Shi BB, Baurecht D, Krisai-Greilhuber I, Schmoll M, Brecker L, Valant-Vetschera K, Schinnerl J. New cytochalasans from an endophytic Xylaria species associated with Costa Rican Palicourea elata (Rubiaceae). Nat Prod Res 2023; 37:85-92. [PMID: 34311632 DOI: 10.1080/14786419.2021.1956490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Four new leucine-derived cytochalasans, possessing a 5,6,5,8-ring (1) and a 5,6,11-ring core (2-4), were isolated from a cultivated endophytic fungus Xylaria sp. strain WH2D4 (Xylariaceae). This fungus was isolated from leaves of the neotropical tree species Palicourea elata (Sw.) Borhidi (Rubiaceae) collected in Costa Rica. The chemical structures were determined by employing IR, MS as well as 1D- and 2D-NMR experiments. The stereochemistry at C-15 of compound 4 was determined by quantum calculations. The isolated compounds did not affect germination and growth of Trichoderma reesei and the opportunistic human fungal pathogen T. longibrachiatum.
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Affiliation(s)
- Wolfgang Hinterdobler
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria.,AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Tulln, Austria
| | - Markus Bacher
- Department of Chemistry, Division of Chemistry of Renewables, University of Natural Resources and Life Sciences (BOKU), Tulln, Austria
| | - Bao-Bao Shi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Dieter Baurecht
- Department of Physical Chemistry, University of Vienna, Vienna, Austria
| | | | - Monika Schmoll
- AIT Austrian Institute of Technology GmbH, Center for Health & Bioresources, Tulln, Austria
| | - Lothar Brecker
- Department of Organic Chemistry, University of Vienna, Vienna, Austria
| | | | - Johann Schinnerl
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
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Su JH, Wang MQ, Li YZ, Lin YS, Gu JY, Zhu LP, Yang WQ, Jiang SQ, Zhao ZX, Sun ZH. Rare cytochalasans isolated from the mangrove endophytic fungus Xylaria arbuscula. Fitoterapia 2022; 157:105124. [PMID: 35007685 DOI: 10.1016/j.fitote.2022.105124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 01/13/2023]
Abstract
Four new cytochalasans, arbuschalasins A-D (1-4), along with thirteen known analogues (5-17), were isolated from the solid rice medium of endophytic fungus Xylaria arbuscula. Arbuschalasins A-B feature a rare 5/6/6/6 fused ring system while arbuschalasin D was characterized as the first example of natural cytochalasans that possesses a 5/5/11 fused scaffold. The structures of 1-4 were assigned by spectroscopic data, with their absolute structures being determined by electronic circular dichroism (ECD) calculations. All of the isolates were evaluated against the human colorectal adenocarcinoma cell lines (HCT15). Compounds 6 and 7 showed significant inhibitory effects (IC50 values were 13.5 and 13.4 μM, respectively), being more active than those of the positive control, fluorouracil (103.1 μM).
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Affiliation(s)
- Jian-Hui Su
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Ming-Qiang Wang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yan-Zhen Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yin-Si Lin
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Jiang-Yong Gu
- Research Center of Integrative Medicine, School of Basic Medical Science, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Li-Ping Zhu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Wei-Qun Yang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Shi-Qin Jiang
- Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhong-Xiang Zhao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
| | - Zhang-Hua Sun
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.
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Abstract
Cytochalasans are a group of fungal-derived natural products characterized by a perhydro-isoindolone core fused with a macrocyclic ring, and they exhibit a high structural diversity and a broad spectrum of bioactivities. Cytochalasans have attracted significant attention from the chemical and pharmacological communities and have been reviewed previously from various perspectives in recent years. However, continued interest in the cytochalasans and the number of laboratory investigations on these compounds are both growing rapidly. This contribution provides a general overview of the isolation, structural determination, biological activities, biosynthesis, and total synthesis of cytochalasans. In total, 477 cytochalasans are covered, including "merocytochalasans" that arise by the dimerization or polymerization of one or more cytochalasan molecules with one or more other natural product units. This contribution provides a comprehensive treatment of the cytochalasans, and it is hoped that it may stimulate further work on these interesting natural products.
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Wang WX, Li ZH, He J, Feng T, Li J, Liu JK. Cytotoxic cytochalasans from fungus Xylaria longipes. Fitoterapia 2019; 137:104278. [PMID: 31351910 DOI: 10.1016/j.fitote.2019.104278] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/22/2019] [Accepted: 07/24/2019] [Indexed: 11/19/2022]
Abstract
Five new cytochalasans (1-5) were isolated from the rice fermentation of fungus Xylaria longipes, along with seven known compounds cytochalasin P (6), cytochalasin D (7), zygosporin D (8), 7-O-acetylcytochalasin D (9), cytochalasin C (10), 6,7-dihydro-7-oxo-cytochalasin C (11), and 6,7-dihydro-7-oxo-deacetylcytochalasin C (12). Their structures and absolute configurations were determined by extensive experimental spectroscopic methods as well as ECD calculation and GIAO 13C NMR calculation. The cytotoxicity of obtained compounds (1-12) was evaluated against human cancer cell lines HL-60, A549, SMMC-7721, MCF-7, and SW480. Compounds 6-8, 11, and 12 showed cytotoxicity with IC50 value ranging from 4.17-37.18 μM.
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Affiliation(s)
- Wen-Xuan Wang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities), PR China
| | - Zheng-Hui Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities), PR China.
| | - Juan He
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities), PR China
| | - Tao Feng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities), PR China
| | - Jing Li
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities), PR China.
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, Hubei 430074, PR China; National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities), PR China.
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Chen L, Liu YT, Song B, Zhang HW, Ding G, Liu XZ, Gu YC, Zou ZM. Stereochemical determination of new cytochalasans from the plant endophytic fungus Trichoderma gamsii. Fitoterapia 2014; 96:115-22. [PMID: 24752139 DOI: 10.1016/j.fitote.2014.04.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 04/11/2014] [Accepted: 04/12/2014] [Indexed: 01/31/2023]
Abstract
Three new cytochalasans, trichalasins E (1), F (2) and H (7), together with four known analogues, trichalasin C (3), aspochalasin K (4), trichalasin G (5) and aspergillin PZ (8), were isolated from one endophytic fungus Trichoderma gamsii inhabiting in the traditional medicinal plant Panax notoginseng (BurK.) F.H. Chen. Trichalasins E (1) contains a unique hydroperoxyl group, which is the first report in all known analogues, whereas trichalasin H (7) possesses the rare 6/5/6/6/5 pentacyclic skeleton with 12-oxatricyclo [6.3.1.0(2,7)] moiety as that of aspergillin PZ (8). The relative configurations of the new compounds were characterized by analysis of coupling constants and ROESY correlations, and the absolute configurations of trichalasins E (1), H (7) and aspergillin PZ (8) were determined by modified Mosher's reaction. In addition, compounds 1-5, 7 and 8 were tested cytotoxic activities against several cancer cell lines.
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Affiliation(s)
- Lin Chen
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China.
| | - Yue-Tao Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Bo Song
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Hong-Wu Zhang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China
| | - Gang Ding
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China; State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China.
| | - Xing-Zhong Liu
- Institute of Microbiology. Chinese Academy of Sciences, Beijing, PR China
| | - Yu-Cheng Gu
- Syngenta Jealott's Hill International Research Center, Bracknell, Berkshire RG42 6EY, United Kingdom
| | - Zhong-Mei Zou
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, PR China.
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