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Lin SH, Yan QX, Zhang Y, Wu TZ, Zou ZB, Liu QM, Jiang JY, Xie MM, Xu L, Hao YJ, Liu Z, Liu GM, Yang XW. Citriquinolinones A and B: Rare Isoquinolinone-Embedded Citrinin Analogues and Related Metabolites from the Deep-Sea-Derived Aspergillus versicolor 170217. Mar Drugs 2023; 21:504. [PMID: 37888439 PMCID: PMC10608187 DOI: 10.3390/md21100504] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023] Open
Abstract
A systematic chemical investigation of the deep-sea-derived fungus Aspergillus versicolor 170217 resulted in the isolation of six new (1-6) and 45 known (7-51) compounds. The structures of the new compounds were established on the basis of exhaustive analysis of their spectroscopic data and theoretical-statistical approaches including GIAO-NMR, TDDFT-ECD/ORD calculations, DP4+ probability analysis, and biogenetic consideration. Citriquinolinones A (1) and B (2) feature a unique isoquinolinone-embedded citrinin scaffold, representing the first exemplars of a citrinin-isoquinolinone hybrid. Dicitrinones K-L (3-4) are two new dimeric citrinin analogues with a rare CH-CH3 bridge. Biologically, frangula-emodin (32) and diorcinol (17) displayed remarkable anti-food allergic activity with IC50 values of 7.9 ± 3.0 μM and 13.4 ± 1.2 μM, respectively, while diorcinol (17) and penicitrinol A (20) exhibited weak inhibitory activity against Vibrio parahemolyticus, with MIC values ranging from 128 to 256 μM.
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Affiliation(s)
- Shui-Hua Lin
- Department of Pharmacy, Quanzhou Medical College, 2 Anji Road, Quanzhou 362000, China;
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Qing-Xiang Yan
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Yong Zhang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Tai-Zong Wu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Zheng-Biao Zou
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Qing-Mei Liu
- College of Food and Biological Engineering, Jimei University, 43 Yindou Road, Xiamen 361021, China; (Q.-M.L.); (G.-M.L.)
| | - Jia-Yang Jiang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
- College of Life Sciences, Hainan University, 58 People’s Avenue, Haikou 570228, China;
| | - Ming-Min Xie
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Lin Xu
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - You-Jia Hao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
| | - Zhu Liu
- College of Life Sciences, Hainan University, 58 People’s Avenue, Haikou 570228, China;
| | - Guang-Ming Liu
- College of Food and Biological Engineering, Jimei University, 43 Yindou Road, Xiamen 361021, China; (Q.-M.L.); (G.-M.L.)
| | - Xian-Wen Yang
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Q.-X.Y.); (Y.Z.); (T.-Z.W.); (Z.-B.Z.); (J.-Y.J.); (M.-M.X.); (L.X.); (Y.-J.H.)
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Huang Q, Hao MJ, Wang LY, Wu F, Li HJ, Yuan J, Xu J, Mahmud T, Lan WJ. Isolation and stereospecific synthesis of indole alkaloids with lipid-lowering effects from the marine-derived fungus Colletotrichum gloeosporioides BB4. PHYTOCHEMISTRY 2023; 209:113612. [PMID: 36813220 DOI: 10.1016/j.phytochem.2023.113612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 02/15/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Seven undescribed compounds, colletotrichindoles A-E, colletotrichaniline A, and colletotrichdiol A, as well as three known compounds, (-)-isoalternatine A, (+)-alternatine A and 3-hydroxybutan-2-yl 2-phenylacetate were isolated from the marine-derived fungus Colletotrichu gloeosporioides BB4. The racemic mixtures colletotrichindole A,colletotrichindole C, and colletotrichdiol A were further separated by chiral chromatography to give three pairs of enantiomers (10S,11R,13S)/(10R,11S,13R)-colletotrichindole A, (10R,11R,13S)/(10S,11S,13R)-colletotrichindole C, and (9S,10S)/(9R,10R)-colletotrichdiol A, respectively. The chemical structures of seven undescribed compounds and the known compounds, (-)-isoalternatine A, and (+)-alternatine A were determined using a combination of NMR, MS, X-ray diffraction, ECD calculations, and/or chemical synthesis. All possible enantiomers of colletotrichindoles A-E were synthesized and used to determine the absolute configurations of the natural products by comparing their spectroscopic data and HPLC retention times on a chiral column. In addition, the X-ray crystal structures of the known compounds (-)-isoalternatine A and (+)-alternatine A were also obtained to confirm their absolute configurations. (10S,11R,13S)-Colletotrichindole A, colletotrichindole B, and (+)-alternatine A significantly reduced triglyceride levels in 3T3-L1 cells with EC50 values of 5.8, 9.0, and 1.3 μM, respectively.
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Affiliation(s)
- Qin Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, People's Republic of China; School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China.
| | - Meng-Jiao Hao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, People's Republic of China.
| | - Lai-You Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China; Department of Clinical Pharmacy, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, People's Republic of China.
| | - Feng Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, People's Republic of China.
| | - Hou-Jin Li
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, People's Republic of China.
| | - Jie Yuan
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, People's Republic of China.
| | - Jun Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, People's Republic of China.
| | - Taifo Mahmud
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97331, United States.
| | - Wen-Jian Lan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, People's Republic of China.
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Zhang J, Hou X, Chen Z, Ko Y, Ruszczycky MW, Chen Y, Zhou J, Liu HW. Dioxane Bridge Formation during the Biosynthesis of Spectinomycin Involves a Twitch Radical S-Adenosyl Methionine Dehydrogenase That May Have Evolved from an Epimerase. J Am Chem Soc 2022; 144:9910-9919. [PMID: 35622017 DOI: 10.1021/jacs.2c02676] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Spectinomycin is a dioxane-bridged, tricyclic aminoglycoside produced by Streptomyces spectabilis ATCC 27741. While the spe biosynthetic gene cluster for spectinomycin has been reported, the chemistry underlying construction of the dioxane ring is unknown. The twitch radical SAM enzyme SpeY from the spe cluster is shown here to catalyze dehydrogenation of the C2' alcohol of (2'R,3'S)-tetrahydrospectinomycin to yield (3'S)-dihydrospectinomycin as a likely biosynthetic intermediate. This reaction is radical-mediated and initiated via H atom abstraction from C2' of the substrate by the 5'-deoxyadenosyl radical equivalent generated upon reductive cleavage of SAM. Crystallographic analysis of the ternary Michaelis complex places serine-183 adjacent to C2' of the bound substrate opposite C5' of SAM. Mutation of this residue to cysteine converts SpeY to the corresponding C2' epimerase mirroring the opposite phenomenon observed in the homologous twitch radical SAM epimerase HygY from the hygromycin B biosynthetic pathway. Phylogenetic analysis suggests a relatively recent evolutionary branching of putative twitch radical SAM epimerases bearing homologous cysteine residues to generate the SpeY clade of enzymes.
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Affiliation(s)
- Jiawei Zhang
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Xueli Hou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, China.,State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Zhang Chen
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Yeonjin Ko
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Mark W Ruszczycky
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, Texas 78712, United States
| | - Yutian Chen
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, Texas 78712, United States
| | - Jiahai Zhou
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.,CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hung-Wen Liu
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States.,Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, Texas 78712, United States
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Lin M, Adpressa DA, Feng M, Lu Y, Clark BR. Brevianthrones, bianthrones from a Chinese isolate of the endophytic fungus Colletotrichum brevisporum. PHYTOCHEMISTRY 2021; 188:112792. [PMID: 33975160 DOI: 10.1016/j.phytochem.2021.112792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 06/12/2023]
Abstract
Seven undescribed bianthrones, the brevianthrones, together with two known anthraquinones, were isolated from the plant-derived fungus Colletotrichum brevisporum, obtained from the plant Piper sarmentosum Roxb., collected in Guangxi, China. This is the first report of the isolation of bianthrones from the Colletotrichum genus. The structures of the compounds were elucidated by a combination of NMR and MS spectroscopic analysis, while the absolute configurations were determined by X-ray crystallography and by simulation of ECD spectra.
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Affiliation(s)
- Min Lin
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300092, People's Republic of China
| | - Donovon A Adpressa
- Department of Analytical Research and Development, Merck & Co., Inc. Boston, MA, 02115, United States
| | - Meiyu Feng
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300092, People's Republic of China
| | - Ya Lu
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300092, People's Republic of China
| | - Benjamin R Clark
- School of Pharmaceutical Science and Technology, Tianjin University, 92 Weijin Road, Tianjin, 300092, People's Republic of China.
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Kim JW, Shim SH. The fungus Colletotrichum as a source for bioactive secondary metabolites. Arch Pharm Res 2019; 42:735-753. [PMID: 30915681 DOI: 10.1007/s12272-019-01142-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 03/07/2019] [Indexed: 12/30/2022]
Abstract
Colletotrichum sp. is a widely distributed fungal genus, which is mainly known to cause anthracnose on cereals, legumes, fruit trees, and vegetables. Even though many of the Colletotrichum sp. are plant pathogens, a variety of secondary metabolites with diverse bioactivities have been reported to be produced by this fungus. At least 109 secondary metabolites from the fungus Colletotrichum have been reported to date. They mostly include nitrogen-containing metabolites, sterols, terpenes, pyrones, phenolics, and fatty acids. Herein, the authors review the structurally interesting secondary metabolites produced by Colletotrichum and their biological activities.
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Affiliation(s)
- Jung Wha Kim
- College of Pharmacy and Innovative Drug Center, Duksung Women's University, Seoul, 01369, Republic of Korea
| | - Sang Hee Shim
- College of Pharmacy and Innovative Drug Center, Duksung Women's University, Seoul, 01369, Republic of Korea.
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Abstract
Exploration of structurally novel natural products greatly facilitates the discovery of biologically active pharmacophores that are biologically validated starting points for the development of new drugs. Endophytes that colonize the internal tissues of plant species, have been proven to produce a large number of structurally diverse secondary metabolites. These molecules exhibit remarkable biological activities, including antimicrobial, anticancer, anti-inflammatory and antiviral properties, to name but a few. This review surveys the structurally diverse natural products with new carbon skeletons, unusual ring systems, or rare structural moieties that have been isolated from endophytes between 1996 and 2016. It covers their structures and bioactivities. Biosynthesis and/or total syntheses of some important compounds are also highlighted. Some novel secondary metabolites with marked biological activities might deserve more attention from chemists and biologists in further studies.
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Affiliation(s)
- Han Gao
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Gang Li
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
| | - Hong-Xiang Lou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, China.
- Department of Natural Product Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, No. 44 West Wenhua Road, Jinan 250012, China.
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Cao J, Gao L, Chen Y, Sun W, Wang F, Li H, Zhang Y. Citrinal B, natural 11 beta-hydroxysteroid dehydrogennase type 1 inhibitor identified from structure-based virtual screening. Fitoterapia 2017; 123:29-34. [DOI: 10.1016/j.fitote.2017.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 09/19/2017] [Accepted: 09/25/2017] [Indexed: 10/18/2022]
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Wang F, Ma H, Hu Z, Jiang J, Zhu H, Cheng L, Yang Q, Zhang H, Zhang G, Zhang Y. Secondary metabolites from Colletotrichum capsici, an endophytic fungus derived from Siegesbeckia pubescens Makino. Nat Prod Res 2016; 31:1849-1854. [PMID: 27892688 DOI: 10.1080/14786419.2016.1261346] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A rare new tremulane sesquiterpenoid analogue, 11,12-epoxy-5,6-seco-1,6(13)-tremuladien-5,12-olide (1), together with five known altenuene derivatives (2-6) was isolated from the cultures of Colletotrichum capsici, which was isolated as an endophytic fungus from fresh leaves of Siegesbeckia pubescens Makino (Compositae). Their structures were elucidated by means of spectroscopic methods and comparison with literature data. All compounds isolated were reported for the first time from the fungus C. capsici.
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Affiliation(s)
- Fuqian Wang
- a Department of Pharmacy , Wuhan First Hospital , Wuhan , China
| | - Haoran Ma
- a Department of Pharmacy , Wuhan First Hospital , Wuhan , China
| | - Zhengxi Hu
- b Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology , Wuhan , China
| | - Jie Jiang
- a Department of Pharmacy , Wuhan First Hospital , Wuhan , China
| | - Hucheng Zhu
- b Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology , Wuhan , China
| | - Lu Cheng
- a Department of Pharmacy , Wuhan First Hospital , Wuhan , China
| | - Quanwei Yang
- a Department of Pharmacy , Wuhan First Hospital , Wuhan , China
| | - Hong Zhang
- a Department of Pharmacy , Wuhan First Hospital , Wuhan , China
| | - Geng Zhang
- a Department of Pharmacy , Wuhan First Hospital , Wuhan , China
| | - Yonghui Zhang
- b Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology , Wuhan , China
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