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Kwon H, Ann HW, Park S, Kwon J, Park K, Ryu SM, Guo Y, Kim JJ, Yim JH, Kim IC, Shim SH, Lee S, Lee D. Mass spectrometry-guided isolation of thiodiketopiperazines from an EtOAc-extract of Setosphaeria rostrata culture medium and their anti-skin aging effects on TNF-α-induced human dermal fibroblasts. J Antibiot (Tokyo) 2024; 77:257-263. [PMID: 38243062 DOI: 10.1038/s41429-023-00702-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/04/2023] [Accepted: 12/13/2023] [Indexed: 01/21/2024]
Abstract
Using mass spectrometry (MS)-guided isolation methods, a new thiodiketopiperazine derivative (1) and exserohilone (2) were isolated from an EtOAc-extract of Setosphaeria rostrata culture medium. The chemical structure of the new compound was elucidated by MS and NMR spectroscopy, and the absolute configurations were established by the quantum mechanical calculations of electronic circular dichroism. All isolated compounds were examined for their effects on reactive oxygen species (ROS) production, matrix metalloproteinase 1 (MMP-1) secretion, and procollagen type I α1 secretion in tumor necrosis factor (TNF)-α-induced human dermal fibroblasts. Compound 1 and exserohilone (2) exhibited the inhibition of TNF-α-induced ROS generation and MMP-1 secretion. Additionally, compound 1 and exserohilone (2) increased the procollagen type I α1 secretion. Compound 1 docked computationally into the active site of MMP-1 (-6.0 kcal/mol).
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Affiliation(s)
- Haeun Kwon
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Hee Woon Ann
- Department of Life Science, Gachon University, Seongnam, 13120, Republic of Korea
| | - Sojung Park
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Jaeyoung Kwon
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung, 25451, Republic of Korea
| | - Keunwan Park
- Natural Product Informatics Research Center, Korea Institute of Science and Technology (KIST) Gangneung Institute, Gangneung, 25451, Republic of Korea
| | - Seung Mok Ryu
- Herbal Medicine Resources Center, Korea Institute of Oriental Medicine, Naju, 58245, Republic of Korea
| | - Yuanqiang Guo
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300350, People's Republic of China
| | - Jae-Jin Kim
- Division of Environmental Science and Ecological Engineering, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Joung Han Yim
- Division of Life Sciences, Korea Polar Research Institute, Incheon, 21990, Republic of Korea
| | - Il-Chan Kim
- Division of Life Sciences, Korea Polar Research Institute, Incheon, 21990, Republic of Korea
| | - Sang Hee Shim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sullim Lee
- Department of Life Science, Gachon University, Seongnam, 13120, Republic of Korea.
| | - Dongho Lee
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea.
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Cheng M, Tang X, Shao Z, Li G, Yao Q. Cytotoxic Epipolythiodioxopiperazines from the Deep-Sea-Derived Fungus Exophiala mesophila MCCC 3A00939. JOURNAL OF NATURAL PRODUCTS 2023; 86:2342-2347. [PMID: 37807846 DOI: 10.1021/acs.jnatprod.3c00534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Four new aranotin-type epipolythiodioxopiperazines, graphiumins K-N (1-4), along with four known analogues (5-8), were isolated from the deep-sea-derived fungus Exophiala mesophila MCCC 3A00939. Their structures were elucidated by detailed interpretation of NMR and mass spectrometric data. The absolute configuration of the isolates was deduced by a single-crystal X-ray diffraction analysis and the comparisons of experimental electronic circular dichroism (ECD) data with calculated ECD spectra. Graphiumins K (1) and L (2) exhibited cytotoxic activities against the K562, H69AR, and MDA-MB-231 cancer cells with IC50 values ranging from 2.3 to 5.9 μM.
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Affiliation(s)
- Meimei Cheng
- School of Pharmaceutical Sciences & Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, National Key Laboratory of Advanced Drug Delivery System, Key Laboratory for Biotechnology Drugs of National Health Commission (Shandong Academy of Medical Sciences), Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan 250117, Shandong, People's Republic of China
| | - Xuli Tang
- College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, People's Republic of China
| | - Zongze Shao
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, People's Republic of China
| | - Guoqiang Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory of Marine Drugs and Biological Products, Pilot National Laboratory for Marine Science and Technology, Qingdao 266235, People's Republic of China
| | - Qingqiang Yao
- School of Pharmaceutical Sciences & Institute of Materia Medica, Shandong First Medical University & Shandong Academy of Medical Sciences, National Key Laboratory of Advanced Drug Delivery System, Key Laboratory for Biotechnology Drugs of National Health Commission (Shandong Academy of Medical Sciences), Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan 250117, Shandong, People's Republic of China
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3
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Chen N, Chen SW, Qiu SY, Lu SM, Wei JR, Yang FW, Geng HC, Zhou M. Ganodermasides E-H, four new ergosterol derivatives from the endophytic fungus Epicoccum poae DJ-F associated with Euphorbia royleana. Fitoterapia 2023; 168:105562. [PMID: 37295756 DOI: 10.1016/j.fitote.2023.105562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 04/25/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023]
Abstract
Ganodermasides E-H (1-4), four new ergosterol derivatives and two known ones (5 and 6) were isolated from the fermentation of the endophytic fungus Epicoccum poae DJ-F in the stems of Euphorbia royleana Boiss. Their structures were elucidated by spectroscopic analysis, including extensive 1D NMR, 2D NMR, and HRESIMS techniques. All the isolated compounds were tested for their vitro antibacterial activity. Compounds 1-6 showed weak inhibitory effects on Staphylococcus epidermidis, Pseudomonas syringae, and Ralstonia solanacearum with MIC values ranging from 0.4 to 3.6 mM.
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Affiliation(s)
- Ning Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China.; School of Ethnic Medicine, Yunnan Minzu University, Kunming 650031, PR China
| | - Shi-Wei Chen
- School of Ethnic Medicine, Yunnan Minzu University, Kunming 650031, PR China
| | - Shi-Yu Qiu
- School of Ethnic Medicine, Yunnan Minzu University, Kunming 650031, PR China
| | - Song-Mei Lu
- School of Ethnic Medicine, Yunnan Minzu University, Kunming 650031, PR China
| | - Ji-Rui Wei
- School of Ethnic Medicine, Yunnan Minzu University, Kunming 650031, PR China
| | - Fu-Wen Yang
- School of Ethnic Medicine, Yunnan Minzu University, Kunming 650031, PR China
| | - Hui-Chun Geng
- Institute of Quality Standard and Testing Technology, Yunnan Academy of Agricultural Science, Kunming 650223, Yunnan, People's Republic of China..
| | - Min Zhou
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China.; School of Ethnic Medicine, Yunnan Minzu University, Kunming 650031, PR China..
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4
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Huber EM. Epipolythiodioxopiperazine-Based Natural Products: Building Blocks, Biosynthesis and Biological Activities. Chembiochem 2022; 23:e202200341. [PMID: 35997236 PMCID: PMC10086836 DOI: 10.1002/cbic.202200341] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/19/2022] [Indexed: 01/25/2023]
Abstract
Epipolythiodioxopiperazines (ETPs) are fungal secondary metabolites that share a 2,5-diketopiperazine scaffold built from two amino acids and bridged by a sulfide moiety. Modifications of the core and the amino acid side chains, for example by methylations, acetylations, hydroxylations, prenylations, halogenations, cyclizations, and truncations create the structural diversity of ETPs and contribute to their biological activity. However, the key feature responsible for the bioactivities of ETPs is their sulfide moiety. Over the last years, combinations of genome mining, reverse genetics, metabolomics, biochemistry, and structural biology deciphered principles of ETP production. Sulfurization via glutathione and uncovering of the thiols followed by either oxidation or methylation crystallized as fundamental steps that impact expression of the biosynthesis cluster, toxicity and secretion of the metabolite as well as self-tolerance of the producer. This article showcases structure and activity of prototype ETPs such as gliotoxin and discusses the current knowledge on the biosynthesis routes of these exceptional natural products.
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Affiliation(s)
- Eva M Huber
- Chair of Biochemistry, Center for Protein Assemblies, Technical University of Munich, Ernst-Otto-Fischer-Str. 8, 85748, Garching, Germany
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Zhang Y, Fu P, Zhang Y, Xu Y, Zhang C, Liu X, Che Y. Cladoxanthones A and B, Xanthone-Derived Metabolites with a Spiro[cyclopentane-1,2'-[3,9a]ethanoxanthene]-2,4',9',11'-tetraone Skeleton from a Cladosporium sp. JOURNAL OF NATURAL PRODUCTS 2022; 85:2541-2546. [PMID: 36367222 DOI: 10.1021/acs.jnatprod.2c00353] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Cladoxanthones A (1) and B (2), two xanthone-derived metabolites featuring a new spiro[cyclopentane-1,2'-[3,9a]ethanoxanthene]-2,4',9',11'(4a'H)-tetraone skeleton, were isolated from cultures of the ascomycete fungus Cladosporium sp., together with the known mangrovamide J (3). Their structures were elucidated primarily by NMR experiments. The absolute configurations of 1 and 2 were assigned by X-ray crystallography using Cu Kα radiation. Compound 1 could be generated from the hypothetical precursors related to α-methylene ketone and dihydro-xanthone via a Diels-Alder reaction, while 2 could be an oxidative coupling product resulting from 1 and 3. Compounds 1 and 2 showed weakly cytotoxic effects.
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Affiliation(s)
- Yang Zhang
- State Key Laboratory of Toxicology & Medical Countermeasures, Beijing Institute of Pharmacology & Toxicology, Beijing 100850, People's Republic of China
| | - Peinan Fu
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Yiqing Zhang
- State Key Laboratory of Toxicology & Medical Countermeasures, Beijing Institute of Pharmacology & Toxicology, Beijing 100850, People's Republic of China
| | - Yang Xu
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Chunyan Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Xingzhong Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
| | - Yongsheng Che
- NHC Key Laboratory of Biotechnology of Antibiotics, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
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Zhang T, Cai G, Rong X, Xu J, Jiang B, Wang H, Li X, Wang L, Zhang R, He W, Yu L. Mining and characterization of the PKS-NRPS hybrid for epicoccamide A: a mannosylated tetramate derivative from Epicoccum sp. CPCC 400996. Microb Cell Fact 2022; 21:249. [PMID: 36419162 PMCID: PMC9685919 DOI: 10.1186/s12934-022-01975-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/16/2022] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Genomic analysis indicated that the genomes of ascomycetes might carry dozens of biosynthetic gene clusters (BGCs), yet many clusters have remained enigmatic. The ascomycete genus Epicoccum, belonging to the family Didymellaceae, is ubiquitous that colonizes different types of substrates and is associated with phyllosphere or decaying vegetation. Species of this genus are prolific producers of bioactive substances. The epicoccamides, as biosynthetically distinct mannosylated tetramate, were first isolated in 2003 from Epicoccum sp. In this study, using a combination of genome mining, chemical identification, genetic deletion, and bioinformatic analysis, we identified the required BGC epi responsible for epicoccamide A biosynthesis in Epicoccum sp. CPCC 400996. RESULTS The unconventional biosynthetic gene cluster epi was obtained from an endophyte Epicoccum sp. CPCC 400996 through AntiSMASH-based genome mining. The cluster epi includes six putative open reading frames (epiA-epiF) altogether, in which the epiA encodes a tetramate-forming polyketide synthase and nonribosomal peptide synthetases (PKS-NRPS hybrid). Sequence alignments and bioinformatic analysis to other metabolic pathways of fungal tetramates, we proposed that the gene cluster epi could be involved in generating epicoccamides. Genetic knockout of epiA completely abolished the biosynthesis of epicoccamide A (1), thereby establishing the correlation between the BGC epi and biosynthesis of epicoccamide A. Bioinformatic adenylation domain signature analysis of EpiA and other fungal PKS-NRPSs (NRPs) indicated that the EpiA is L-alanine incorporating tetramates megasynthase. Furthermore, based on the molecular structures of epicoccamide A and deduced gene functions of the cluster epi, a hypothetic metabolic pathway for biosynthesizing compound 1 was proposed. The corresponding tetramates releasing during epicoccamide A biosynthesis was catalyzed through Dieckmann-type cyclization, in which the reductive (R) domain residing in terminal module of EpiA accomplished the conversion. These results unveiled the underlying mechanism of epicoccamides biosynthesis and these findings might provide opportunities for derivatization of epicoccamides or generation of new chemical entities. CONCLUSION Genome mining and genetic inactivation experiments unveiled a previously uncharacterized PKS - NRPS hybrid-based BGC epi responsible for the generation of epicoccamide A (1) in endophyte Epicoccum sp. CPCC 400996. In addition, based on the gene cluster data, a hypothetical biosynthetic pathway of epicoccamide A was proposed.
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Affiliation(s)
- Tao Zhang
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Guowei Cai
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China ,grid.452240.50000 0004 8342 6962Medical Research Center, Binzhou Medical University Hospital, Binzhou, 256603 Shandong China
| | - Xiaoting Rong
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China ,grid.510447.30000 0000 9970 6820College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212003 Jiangsu China
| | - Jingwen Xu
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Bingya Jiang
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Hao Wang
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Xinxin Li
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Lu Wang
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Ran Zhang
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Wenni He
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
| | - Liyan Yu
- grid.506261.60000 0001 0706 7839Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050 China
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7
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Adam C, Magdalena Ś. Species Diversity of Mycoplankton on the Background of Selected Indicators of Water Quality in Stratified Mesotrophic Lakes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192013298. [PMID: 36293879 PMCID: PMC9602596 DOI: 10.3390/ijerph192013298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 06/08/2023]
Abstract
The aim of the study was to determine mycoplankton species diversity in relation to the physico-chemical parameters of lake waters. The research was carried out in the summer months in 15 mesotrophic lakes and showed a high ecological significance index for Rhodotorula glutinis, Epicoccum nigrum, Fusarium sporotrichioides, and Trichophyton violaceum. Mycoplankton abundance and species diversity decreased with the depth of water, which coincided with a decrease in oxygen content and organic matter concentration. A high concentration of nitrogen compounds (total nitrogen-TN and dissolved nitrogen-DN) limited the development of mycobiota in the hypolimnion. In the metalimnion, the intensive development of organisms, especially bacteria, limited mycoplankton abundance despite perfect physical and chemical conditions for its development. Finally, mycoplankton functioned the best in slightly alkaline waters.
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Affiliation(s)
- Cudowski Adam
- Department of Water Ecology, Faculty of Biology, University of Bialystok, Ciolkowskiego 1J, 15-245 Bialystok, Poland
| | - Świsłocka Magdalena
- Department of Zoology and Genetics, Faculty of Biology, University of Bialystok, Ciolkowskiego 1J, 15-245 Bialystok, Poland
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8
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Abed RM. Exploring Fungal Biodiversity of Genus Epicoccum and Their Biotechnological Potential. Fungal Biol 2021. [DOI: 10.1007/978-3-030-67561-5_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Lee AJ, Cadelis MM, Kim SH, Swift S, Copp BR, Villas-Boas SG. Epipyrone A, a Broad-Spectrum Antifungal Compound Produced by Epicoccum nigrum ICMP 19927. Molecules 2020; 25:E5997. [PMID: 33352899 PMCID: PMC7766273 DOI: 10.3390/molecules25245997] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 02/02/2023] Open
Abstract
We have isolated a filamentous fungus that actively secretes a pigmented exudate when growing on agar plates. The fungus was identified as being a strain of Epicoccum nigrum. The fungal exudate presented strong antifungal activity against both yeasts and filamentous fungi, and inhibited the germination of fungal spores. The chemical characterization of the exudate showed that the pigmented molecule presenting antifungal activity is the disalt of epipyrone A-a water-soluble polyene metabolite with a molecular mass of 612.29 and maximal UV-Vis absorbance at 428 nm. This antifungal compound showed excellent stability to different temperatures and neutral to alkaline pH.
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Affiliation(s)
- Alex J. Lee
- School of Biological Sciences, University of Auckland, 3A Symonds Street, 1010 Auckland, New Zealand; (A.J.L.); (S.H.K.)
| | - Melissa M. Cadelis
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, 1010 Auckland, New Zealand; (M.M.C.); (B.R.C.)
- School of Medical Sciences, University of Auckland, 85 Park Road, Grafton, 1023 Auckland, New Zealand;
| | - Sang H. Kim
- School of Biological Sciences, University of Auckland, 3A Symonds Street, 1010 Auckland, New Zealand; (A.J.L.); (S.H.K.)
| | - Simon Swift
- School of Medical Sciences, University of Auckland, 85 Park Road, Grafton, 1023 Auckland, New Zealand;
| | - Brent R. Copp
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, 1010 Auckland, New Zealand; (M.M.C.); (B.R.C.)
| | - Silas G. Villas-Boas
- School of Biological Sciences, University of Auckland, 3A Symonds Street, 1010 Auckland, New Zealand; (A.J.L.); (S.H.K.)
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10
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Chi LP, Li XM, Li X, Wang BG. New Antibacterial Thiodiketopiperazines from the Deep Sea Sediment-Derived Fungus Epicoccum nigrum SD-388. Chem Biodivers 2020; 17:e2000320. [PMID: 32686343 DOI: 10.1002/cbdv.202000320] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 06/01/2020] [Indexed: 12/30/2022]
Abstract
Two new antibacterial thiodiketopiperazine derivatives (TDKPs), 7-dehydroxyepicoccin H and 7-hydroxyeutypellazine F, along with seven known TDKP analogs, were isolated and identified from Epicoccum nigrum SD-388, a deep-sea-sediment-derived fungus. The structures of these compounds were elucidated on the basis of detailed spectroscopic analysis. The absolute configuration of 7-dehydroxyepicoccin H was established by X-ray crystallographic analysis, while 7-hydroxyeutypellazine F was determined by ECD experiment and TDDFT-ECD calculation. The antibacterial activities against human and aquatic pathogens were evaluated. 7-Dehydroxyepicoccin H and 7-hydroxyeutypellazine F displayed inhibitory activities against aquatic pathogens Vibrio vulnificus, V. alginolyticus, and Edwardsiella tarda, with MIC values ranging from 4.0 to 8.0 μg/mL.
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Affiliation(s)
- Lu-Ping Chi
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao, 266071, P. R. China.,Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao, 266237, P. R. China.,University of Chinese Academy of Sciences, Yuquan Road 19 A, Beijing, 100049, P. R. China
| | - Xiao-Ming Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao, 266071, P. R. China.,Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao, 266237, P. R. China
| | - Xin Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao, 266071, P. R. China.,Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao, 266237, P. R. China
| | - Bin-Gui Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Nanhai Road 7, Qingdao, 266071, P. R. China.,Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Wenhai Road 1, Qingdao, 266237, P. R. China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Nanhai Road 7, Qingdao, 266071, P. R. China
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11
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Chou TY, Kuo HP, Tsai SF, Huang ST, Yang MJ, Lee SS, Chang CC. Doubled production of cordycepin analogs in cultured Cordyceps militaris by addition of Andrea droppings. Nat Prod Res 2020; 35:5459-5464. [PMID: 32594773 DOI: 10.1080/14786419.2020.1781112] [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] [Indexed: 10/24/2022]
Abstract
Cordyceps sinensis is a traditional Chinese medicine with various biological activities. With its limited natural supply, cultured C. militaris has become the major alternative source, and the culture conditions may affect the chemical compositions. To improve the production of chemical ingredients, C. militaris was cultured with three different media, including rice only, rice plus 3% tea leaves, and rice plus 3% droppings of Andraca theae. The fractions of dried C. militaris cultured with rice were chromatographic separated to afford ten compounds: phenylalanine, dimerumic acid, nicotinic acid, tryptophan, N6-(2-hydroxyethyl)-adenosine, uracil, uridine, cordycepin, ergosterol, and mannitol. Of these, in the cultured medium of rice plus 3% Andraca droppings, the amount of one major compound cordycepin is about two folds than the highest reported data, and dimerumic acid and N6-(2-hydroxyethyl)-adenosine were isolated for the first time from this species.
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Affiliation(s)
- Tzu-Yun Chou
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan R.O.C
| | - Hsiao-Ping Kuo
- Bioresources Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan R.O.C
| | - Sheng-Fa Tsai
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan R.O.C
| | - Shyue-Tsong Huang
- Bioresources Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan R.O.C
| | - Meei-Ju Yang
- Tea Research and Extension Station, Taoyuan, Taiwan R.O.C
| | - Shoei-Sheng Lee
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan R.O.C
| | - Chia-Chuan Chang
- School of Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan R.O.C
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12
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Zhu M, Zhang X, Huang X, Wang H, Anjum K, Gu Q, Zhu T, Zhang G, Li D. Irregularly Bridged Epipolythiodioxopiperazines and Related Analogues: Sources, Structures, and Biological Activities. JOURNAL OF NATURAL PRODUCTS 2020; 83:2045-2053. [PMID: 32543845 DOI: 10.1021/acs.jnatprod.9b01283] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Epipolythiodioxopiperazines (ETPs) are a class of biologically active fungal secondary metabolites characterized by a bridged polysulfide piperazine ring. Regularly, the sulfide functionality is attached in the α-positions of the dioxopiperazine scaffold. However, ETPs possessing irregular sulfur bridges have rarely been explored. This review summarizes that 83 compounds of this subtype have been isolated and characterized since the discovery of gliovirin in 1982. Herein, particular emphasis is given to the isolation, chemistry, and biological activity of this subtype. For a better understanding, a relevant summary focusing on the source microorganisms and their taxonomy is provided and will help elucidate the fascinating chemistry and biology of these unusual ETPs.
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Affiliation(s)
- Meilin Zhu
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Xuewen Zhang
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Xuenan Huang
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Haotian Wang
- School of Pharmacy, Bengbu Medical College, 2600 Donghai Road, Bengbu 233030, Anhui, People's Republic of China
| | - Komal Anjum
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Qianqun Gu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Tianjiao Zhu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Guojian Zhang
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
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13
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Li CY, Chang CC, Tsai YH, El-Shazly M, Wu CC, Wang SW, Hwang TL, Wei CK, Hohmann J, Yang ZJ, Cheng YB, Wu YC, Chang FR. Anti-inflammatory, Antiplatelet Aggregation, and Antiangiogenesis Polyketides from Epicoccum sorghinum: Toward an Understating of Its Biological Activities and Potential Applications. ACS OMEGA 2020; 5:11092-11099. [PMID: 32455230 PMCID: PMC7241018 DOI: 10.1021/acsomega.0c01000] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/24/2020] [Indexed: 05/28/2023]
Abstract
The ethyl acetate extract of an endophyte Epicoccum sorghinum exhibited anti-inflammatory activity at a concentration of <10 μg/mL. By bioassay-guided fractionation, one new compound, named epicorepoxydon A (1), and one unusual bioactive compound, 6-(hydroxymethyl)benzene-1,2,4-triol (6), together with six known compounds, were isolated from E. sorghinum. The structures of all isolates were established by spectroscopic analyses. The relative configuration of 1 was deduced by the NOESY spectrum and its absolute configuration was determined by X-ray single-crystal analysis. The biological activities of all isolates were evaluated using four types of bioassays including cytotoxicity, anti-inflammatory, antiplatelet aggregation, and antiangiogenesis activities. Compounds 4 and 6 showed potent anti-inflammatory activity, compound 2 possessed potent antiplatelet aggregation and antiangiogenesis activities, and compound 6 demonstrated antiangiogenesis activity. This fungal species can cause a human hemorrhagic disorder known as onyalai. In this study, we identified the active components with antiplatelet aggregation and antiangiogenesis activities, which may be related to the hemorrhagic disorder caused by this fungus. Moreover, we proposed a biosynthetic pathway of the isolated polyketide secondary metabolites and investigated their structure-activity relationship (SAR). Our results suggested that E. sorghinum is a potent source of biologically active compounds that can be developed as antiplatelet aggregation and anti-inflammatory agents.
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Affiliation(s)
- Chi-Ying Li
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ching-Chia Chang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yi-Hong Tsai
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Mohamed El-Shazly
- Department
of Pharmacognosy, Faculty of Pharmacy, Ain-Shams
University, Organization of African Unity Street, Abassia, Cairo 11566, Egypt
- Department
of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Chin-Chung Wu
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shih-Wei Wang
- Department
of Medicine, Mackay Medical College, New Taipei City 252, Taiwan
| | - Tsong-Long Hwang
- Graduate
Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Research
Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic
Safety, and Graduate Institute of Health Industry Technology, College
of Human Ecology, Chang Gung University
of Science and Technology, Taoyuan 333, Taiwan
- Department
of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chien-Kei Wei
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Judit Hohmann
- Department
of Pharmacognosy, Interdisciplinary Excellence Center, University of Szeged, H-6720 Szeged, Hungary
- Interdisciplinary
Centre for Natural Products, University
of Szeged, H-6720 Szeged, Hungary
| | - Zih-Jie Yang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yuan-Bin Cheng
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yang-Chang Wu
- Graduate
Institute of Integrated Medicine, China
Medical University, Taichung 404, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan
| | - Fang-Rong Chang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung
Medical University Hospital, Kaohsiung Medical
University, Kaohsiung 807, Taiwan
- Department
of Marine Biotechnology and Resources, National
Sun Yat-sen University, Kaohsiung 804, Taiwan
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14
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Cytotoxic Thiodiketopiperazine Derivatives from the Deep Sea-Derived Fungus Epicoccum nigrum SD-388. Mar Drugs 2020; 18:md18030160. [PMID: 32183021 PMCID: PMC7143119 DOI: 10.3390/md18030160] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/09/2020] [Accepted: 03/11/2020] [Indexed: 12/27/2022] Open
Abstract
Four new thiodiketopiperazine alkaloids, namely, 5’-hydroxy-6’-ene-epicoccin G (1), 7-methoxy-7’-hydroxyepicoccin G (2), 8’-acetoxyepicoccin D (3), and 7’-demethoxyrostratin C (4), as well as a pair of new enantiomeric diketopiperazines, (±)-5-hydroxydiphenylalazine A (5), along with five known analogues (6–10), were isolated and identified from the culture extract of Epicoccum nigrum SD-388, a fungus obtained from deep-sea sediments (−4500 m). Their structures were established on the basis of detailed interpretation of the NMR spectroscopic and mass spectrometric data. X-ray crystallographic analysis confirmed the structures and established the absolute configurations of compounds 1–3, while the absolute configurations for compounds 4 and 5 were determined by ECD calculations. Compounds 4 and 10 showed potent activity against Huh7.5 liver tumor cells, which were comparable to that of the positive control, sorafenib, and the disulfide bridge at C-2/C-2’ is likely essential for the activity.
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15
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Wang Q, Zhang K, Wang W, Zhang G, Zhu T, Che Q, Gu Q, Li D. Amphiepicoccins A-J: Epipolythiodioxopiperazines from the Fish-Gill-Derived Fungus Epicoccum nigrum HDN17-88. JOURNAL OF NATURAL PRODUCTS 2020; 83:524-531. [PMID: 31975590 DOI: 10.1021/acs.jnatprod.9b01242] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ten new epipolythiodioxopiperazines (ETPs), namely, amphiepicoccins A-J (1-10), were isolated from the fish-gill-derived fungus Epicoccum nigrum HDN17-88. Their structures were deduced from extensive spectroscopic data and electronic circular dichroism (ECD) calculations. Amphiepicoccin A (1) which contains an aromatic indole motif is unprecedented among the epicoccin type of ETPs. Compounds 1, 3, and 6 displayed anti-HSV-2 activities, with IC50 values of 70, 64, and 29 μM, respectively (acyclovir as positive control with an IC50 value of 31 μM), while 5 and 6 also revealed inhibitory activity against Bacillus subtilis with minimum inhibitory concentration (MIC) values of 13 and 25 μM, respectively.
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Affiliation(s)
- Qiuying Wang
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Kaijin Zhang
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Wei Wang
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Guojian Zhang
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Tianjiao Zhu
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Qian Che
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Qianqun Gu
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
| | - Dehai Li
- School of Medicine and Pharmacy , Ocean University of China , Qingdao 266003 , People's Republic of China
- Laboratory for Marine Drugs and Bioproducts , Pilot National Laboratory for Marine Science and Technology , Qingdao , 266237 , People's Republic of China
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16
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The Purification, Characterization, and Biological Activity of New Polyketides from Mangrove-Derived Endophytic Fungus Epicoccum nigrum SCNU-F0002. Mar Drugs 2019; 17:md17070414. [PMID: 31336899 PMCID: PMC6669579 DOI: 10.3390/md17070414] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 07/06/2019] [Accepted: 07/09/2019] [Indexed: 11/17/2022] Open
Abstract
Six new polyketides, including one coumarin (1), two isocoumarins (2 and 3), dihydroradicinin (4), and two benzofuranone derivatives (7 and 8), together with seven known analogues (5–6 and 9–13) were isolated from the culture of the mangrove endophytic fungus Epicoccum nigrum SCNU-F0002. The structures were elucidated on the interpretation of spectroscopic data. The absolute configuration of Compounds 2 and 3 were determined by comparison of their ECD spectra with the data of their analogue dihydroisocoumarins described in the literature. The absolute configuration of 4 was determined by single-crystal X-ray diffraction. All the compounds were screened for their antioxidant, antibacterial, anti-phytopathogenic fungi and cytotoxic activities. Using a DPPH radical-scavenging assay, Compounds 10–13 showed potent antioxidant activity with IC50 values of 13.6, 12.1, 18.1, and 11.7 μg/mL, respectively. In addition, Compounds 6 and 7 showed antibacterial effects against Bacillus subtilis (ATCC 6538), Escherichia coli (ATCC 8739), and Staphylococcus aureus (ATCC 6538), with MIC values in the range of 25–50 μg/mL.
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17
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Vigneshwari A, Rakk D, Németh A, Kocsubé S, Kiss N, Csupor D, Papp T, Škrbić B, Vágvölgyi C, Szekeres A. Host metabolite producing endophytic fungi isolated from Hypericum perforatum. PLoS One 2019; 14:e0217060. [PMID: 31112560 PMCID: PMC6529008 DOI: 10.1371/journal.pone.0217060] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 05/03/2019] [Indexed: 01/29/2023] Open
Abstract
In the present study, endophytic fungi have been isolated from various parts of the medicinal herb Hypericum perforatum (St. John’s Wort), which is known as a source of medically important metabolites. The isolated strains were cultured in liquid media and their ability to synthesize hypericin, the secondary metabolite of the host and its suspected precursor, emodin was tested analyzing the extracts of the fermentation broth and the mycelia. The HPLC-UV analysis of the chloroform/methanol extracts of the mycelia revealed that three isolates were able to produce emodin (SZMC 23771, 19.9 ng/mg; SZMC 23772, 20.8 ng/mg; SZMC 23769, 427.9 ng/mg) and one of them also could synthesize hypericin (SZMC 23769, 320.4 ng/mg). These results were also confirmed via UHPLC-HRMS technique both in full scan and MS/MS mode. The strains producing only emodin belong to the section Alternata of the genus Alternaria, while the isolate producing both metabolites was identified as Epicoccum nigrum. The mycelial extracts of E. nigrum and the Alternaria sp. SZMC 23772 showed higher inhibitory activities in the antimicrobial tests against the six selected bacteria compared to the hypericin and emodin standards in the applied concentration (100 μg/mL), while in case of the Alternaria sp. SZMC 23771 lower inhibition activities were observed on Staphylococcus aureus and Streptomyces albus than the pure compounds.
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Affiliation(s)
- Aruna Vigneshwari
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
- Doctoral School of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Szeged, Hungary
| | - Dávid Rakk
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Anikó Németh
- Botanical Garden, University of Szeged, Szeged, Szeged, Hungary
| | - Sándor Kocsubé
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Noémi Kiss
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Dezső Csupor
- Department of Pharmacognosy, Faculty of Pharmacy, University of Szeged, Szeged, Hungary
| | - Tamás Papp
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
- MTA-SZTE Fungal Pathogenicity Mechanisms Research Group, Hungarian Academy of Sciences—University of Szeged, Szeged, Hungary
| | - Biljana Škrbić
- Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Csaba Vágvölgyi
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
- Interdisciplinary Centre of Natural Products, University of Szeged, Szeged, Hungary
| | - András Szekeres
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
- Interdisciplinary Centre of Natural Products, University of Szeged, Szeged, Hungary
- * E-mail:
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18
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Zhao P, Xue Y, Li J, Li X, Zu X, Zhao Z, Quan C, Gao W, Feng S. Non-lipopeptide fungi-derived peptide antibiotics developed since 2000. Biotechnol Lett 2019; 41:651-673. [PMID: 31020454 DOI: 10.1007/s10529-019-02677-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 04/22/2019] [Indexed: 12/11/2022]
Abstract
The 2,5-diketopiperazines (DKPs) are the smallest cyclopeptides and their basic structure includes a six-membered piperazine nucleus. Typical peptides lack a special functional group in the oligopeptide nucleus. Both are produced by at least 35 representative genera of fungi, and possess huge potential as pharmaceutical drugs and biocontrol agents. To date, only cyclosporin A has been developed into a commercial product. This review summarises 186 fungi-derived compounds reported since 2000. Antibiotic (antibacterial, antifungal, synergistic antifungal, antiviral, antimycobacterial, antimalarial, antileishmanial, insecticidal, antitrypanosomal, nematicidal and antimicroalgal) activities are discussed for 107 of them, including 66 DKPs (14 epipolythiodioxopiperazines, 20 polysulphide bridge-free thiodiketopiperazines, and 32 sulphur-free prenylated indole DKPs), 15 highly N-methylated, and 26 non-highly N-methylated typical peptides. Structure-activity relationships, mechanisms of action, and research methods are covered in detail. Additionally, biosynthases of tardioxopiperazines and neoechinulins are highlighted. These compounds have attracted considerable interest within the pharmaceutical and agrochemical industries.
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Affiliation(s)
- Pengchao Zhao
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Yun Xue
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China.
| | - Jinghua Li
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Xin Li
- Life Science College, Yuncheng University, Yuncheng, 044000, China
| | - Xiangyang Zu
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Zhanqin Zhao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, China.
| | - Chunshan Quan
- Department of Life Science, Dalian Nationalities University, Dalian, 116600, China
| | - Weina Gao
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Shuxiao Feng
- College of Chemical Engineering and Pharmacy, Henan University of Science and Technology, Luoyang, 471023, China
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19
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Ogurtsov VA, Karpychev YV, Nelyubina YV, Primakov PV, Koutentis PA, Rakitin OA. Synthesis of 6,7-Dihydropyrrolo[2,1-c
][1,3]thiazino[3,2-a
]pyrazine-4(11bH
)-(thi)ones from 1,2-Dithiolo-3-(thi)ones. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Vladimir A. Ogurtsov
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospekt 119991 Moscow Russia
| | - Yury V. Karpychev
- JSC State Scientific Research Institute “Kristall”; 606007 Dzerzhinsk, Nizhny Novgorod Region Russian Federation
| | - Yulia V. Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 119991 Moscow Russia
| | - Petr V. Primakov
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 119991 Moscow Russia
- Department of Chemistry; Moscow State; 119899 Moscow Russia
| | | | - Oleg A. Rakitin
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospekt 119991 Moscow Russia
- Nanotechnology Education and Research Center; South Ural State University; 454080 Chelyabinsk Russian Federation
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20
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He Y, Wang R, Huang B, Dai Q, Lin J. Pholiotone A, a new polyketide derivative from Pholiota sp. Nat Prod Res 2019; 34:1957-1961. [PMID: 30724606 DOI: 10.1080/14786419.2019.1569005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Pholiotone A (1), a new polyketide derivative, with tetrahydrobenzofuran-4(2H)-one skeleton, together with four known compounds, trichodermatides A (2) and B (3) and koninginins B (4) and E (5), were isolated from the crude extract of Pholiota sp. The structures of all the isolated compounds were determined mainly by NMR experiments, the modified Mosher method and electronic circular dichroism (ECD) calculations. The antifungal and cytotoxicity of all isolates were evaluated.
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Affiliation(s)
- Yingchao He
- Clinical Medical College of Fujian Provincial Hospital, Fujian Medical University/Fujian provincial Hospital, Fuzhou, People's Republic of China
| | - Renlei Wang
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing, People's Republic of China
| | - Bin Huang
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing, People's Republic of China
| | - Qun Dai
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing, People's Republic of China
| | - Jie Lin
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry, Jiangsu Second Normal University, Nanjing, People's Republic of China
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21
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Eshon J, Gerstner NC, Schomaker JM. Oxidative allene amination for the synthesis of nitrogen-containing heterocycles. ARKIVOC 2018; 2018:204-233. [PMID: 31903453 PMCID: PMC6941799 DOI: 10.24820/ark.5550190.p010.670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The prevalence of stereochemically complex amines in natural products, pharmaceuticals and other bioactive compounds, coupled with the challenges inherent in their preparation, has inspired our work to develop new and versatile methodologies for the synthesis of amine-containing stereotriads ('triads'). The key step is a highly chemo-, regio-, and stereoselective transition-metal catalyzed nitrene transfer reaction that transforms one of the cumulated double bonds of an allene precursor into a bicyclic methyleneaziridine intermediate. This account summarizes our strategies to rapidly elaborate such intermediates into stereochemically rich, densely functionalized amine triads, nitrogen heterocycles, aminated carbocycles and other useful synthetic building blocks.
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Affiliation(s)
- Josephine Eshon
- Department of Chemistry, 1101 University Avenue, Madison, WI 53706, U.S.A
| | - Nels C Gerstner
- Department of Chemistry, 1101 University Avenue, Madison, WI 53706, U.S.A
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22
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Braga RM, Padilla G, Araújo WL. The biotechnological potential of Epicoccum spp.: diversity of secondary metabolites. Crit Rev Microbiol 2018; 44:759-778. [PMID: 30369284 DOI: 10.1080/1040841x.2018.1514364] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Epicoccum is a genus of ubiquitous fungi typically found in air, in soil, and on decaying vegetation. They also commonly display an endophytic lifestyle and are isolated from diverse plant tissues. The fungi from the genus Epicoccum are mainly known for their use as biocontrol agents against phytopathogens and for their ability to produce many secondary metabolites with potential biotechnological applications, such as antioxidant, anticancer,r and antimicrobial compounds. Among the bioactive compounds produced by Epicoccum spp., epicocconone is a commercially available fluorophore, D8646-2-6 is a patented telomerase inhibitor, and taxol is an anticancer drug originally isolated from Taxus brevifolia. Epicoccum spp. also produces epicolactone, an antimicrobial compound with a unique and complex structure that has aroused considerable interest in the chemical-synthesis community. The main goal of the present review is to discuss the diversity of secondary metabolites produced by Epicoccum spp., their biotechnological applications, and proposed hypothetical biosynthesis. In addition, the use of Epicoccum spp. as biocontrol agents and the pigments produced by these fungi are also discussed.
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Affiliation(s)
- Raíssa Mesquita Braga
- a NAP-BIOP - LABMEM, Department of Microbiology, Institute of Biomedical Sciences , University of São Paulo , São Paulo , Brazil
| | - Gabriel Padilla
- a NAP-BIOP - LABMEM, Department of Microbiology, Institute of Biomedical Sciences , University of São Paulo , São Paulo , Brazil
| | - Welington Luiz Araújo
- a NAP-BIOP - LABMEM, Department of Microbiology, Institute of Biomedical Sciences , University of São Paulo , São Paulo , Brazil
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23
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Kravina AG, Carreira EM. Total Synthesis of Epicolactone. Angew Chem Int Ed Engl 2018; 57:13159-13162. [DOI: 10.1002/anie.201807709] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Alberto G. Kravina
- Laboratorium für Organische ChemieETH Zürich Vladimir Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische ChemieETH Zürich Vladimir Prelog-Weg 3 8093 Zürich Switzerland
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24
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Affiliation(s)
- Alberto G. Kravina
- Laboratorium für Organische ChemieETH Zürich Vladimir Prelog-Weg 3 8093 Zürich Switzerland
| | - Erick M. Carreira
- Laboratorium für Organische ChemieETH Zürich Vladimir Prelog-Weg 3 8093 Zürich Switzerland
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25
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Ren F, Chen S, Zhang Y, Zhu S, Xiao J, Liu X, Su R, Che Y. Hawaiienols A-D, Highly Oxygenated p-Terphenyls from an Insect-Associated Fungus, Paraconiothyrium hawaiiense. JOURNAL OF NATURAL PRODUCTS 2018; 81:1752-1759. [PMID: 30024750 DOI: 10.1021/acs.jnatprod.8b00106] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Four new highly oxygenated p-terphenyls, hawaiienols A-D (1-4), have been isolated from cultures of Paraconiothyrium hawaiiense, a fungus associated with the Septobasidium-infected insect Diaspidiotus sp.; their structures were elucidated primarily by NMR experiments. The absolute configurations of 1 and 2-4 were assigned by single-crystal X-ray diffraction analysis using Cu Kα radiation and via electronic circular dichroism calculations, respectively. Compound 1 incorporated the first naturally occurring 4,7-dioxatricyclo[3.2.1.03,6]octane unit in its p-terphenyl skeleton and showed cytotoxicity toward six human tumor cell lines.
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Affiliation(s)
- Fengxia Ren
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Shenxi Chen
- State Key Laboratory of Mycology, Institute of Microbiology , Chinese Academy of Sciences , Beijing 100190 , People's Republic of China
| | - Yang Zhang
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Shuaiming Zhu
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Junhai Xiao
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Xingzhong Liu
- State Key Laboratory of Mycology, Institute of Microbiology , Chinese Academy of Sciences , Beijing 100190 , People's Republic of China
| | - Ruibin Su
- State Key Laboratory of Toxicology & Medical Countermeasures , Beijing Institute of Pharmacology & Toxicology , Beijing 100850 , People's Republic of China
| | - Yongsheng Che
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy , Nankai University , Tianjin 300350 , People's Republic of China
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Wang X, Li Y, Zhang X, Lai D, Zhou L. Structural Diversity and Biological Activities of the Cyclodipeptides from Fungi. Molecules 2017; 22:E2026. [PMID: 29168781 PMCID: PMC6149763 DOI: 10.3390/molecules22122026] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 11/15/2017] [Indexed: 11/17/2022] Open
Abstract
Cyclodipeptides, called 2,5-diketopiperazines (2,5-DKPs), are obtained by the condensation of two amino acids. Fungi have been considered to be a rich source of novel and bioactive cyclodipeptides. This review highlights the occurrence, structures and biological activities of the fungal cyclodipeptides with the literature covered up to July 2017. A total of 635 fungal cyclodipeptides belonging to the groups of tryptophan-proline, tryptophan-tryptophan, tryptophan-Xaa, proline-Xaa, non-tryptophan-non-proline, and thio-analogs have been discussed and reviewed. They were mainly isolated from the genera of Aspergillus and Penicillium. More and more cyclodipeptides have been isolated from marine-derived and plant endophytic fungi. Some of them were screened to have cytotoxic, phytotoxic, antimicrobial, insecticidal, vasodilator, radical scavenging, antioxidant, brine shrimp lethal, antiviral, nematicidal, antituberculosis, and enzyme-inhibitory activities to show their potential applications in agriculture, medicinal, and food industry.
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Affiliation(s)
- Xiaohan Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Yuying Li
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Xuping Zhang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
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Punctaporonins N-S, New Caryophyllene Sesquiterpenoids from Cytospora sp. BIOMED RESEARCH INTERNATIONAL 2017; 2017:7871459. [PMID: 29204448 PMCID: PMC5674490 DOI: 10.1155/2017/7871459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/27/2017] [Accepted: 08/22/2017] [Indexed: 11/17/2022]
Abstract
Six new caryophyllene sesquiterpenoids, punctaporonins N-S (1-6), and three known ones, 6-hydroxypunctaporonins B (7), A (8), and E (9), have been isolated from solid cultures of Cytospora sp. The structures of 1-6 were elucidated primarily by NMR spectroscopy. The absolute configuration of 1 was assigned by X-ray crystallographic analysis of its S-MTPA ester. Compounds 2, 5, and 6 showed modest cytotoxicity against HeLa cells.
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Ranjan A, Deore AS, Yerande SG, Dethe DH. Thiol-Yne Coupling of Propargylamine under Solvent-Free Conditions by Bond Anion Relay Chemistry: An Efficient Synthesis of Thiazolidin-2-ylideneamine. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700603] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Alok Ranjan
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
| | - Abhijit S. Deore
- Acoris Research (A Division of Hikal Ltd); International Biotech Park, Hinjewadi 411057 Pune Maharashtra India
| | - Swapnil G. Yerande
- Acoris Research (A Division of Hikal Ltd); International Biotech Park, Hinjewadi 411057 Pune Maharashtra India
| | - Dattatraya H. Dethe
- Department of Chemistry; Indian Institute of Technology Kanpur; 208016 Kanpur Uttar Pradesh India
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29
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Lin J, Niu S, Ding Z, Wang R, Dai Q, Wei W, Luo R, Liu L. Isolation and Characterization of Aphidicolin Derivatives from Tolypocladium inflatum. Molecules 2017; 22:molecules22071168. [PMID: 28704971 PMCID: PMC6152040 DOI: 10.3390/molecules22071168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/08/2017] [Accepted: 07/08/2017] [Indexed: 12/04/2022] Open
Abstract
Inflatin G (1), a new aphidicolin analogue, together with seven known compounds inflatin A (2), inflatin B (3), aphidicolin (4), aphidicolin-17-monoacetate (5), gulypyrone A (6), pyridoxatin rotamers A (7) and B (8), were isolated from the ascomycete fungus Tolypocladium inflatum. Their structures were determined through NMR analyses and the circular dichroism data of the in situ formed [Rh2(OCOCF3)4] complexes. Compounds 1, 4, 5, 7, and 8 showed modest cytotoxicity against four human cancer cell lines A549, CNE1-MP1, A375, and MCF-7.
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Affiliation(s)
- Jie Lin
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry,Jiangsu Second Normal University, Nanjing 210003, China.
| | - Shubin Niu
- School of Biomedicine, Beijing City University, Beijing 100083, China.
| | - Zhengfeng Ding
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry,Jiangsu Second Normal University, Nanjing 210003, China.
| | - Renlei Wang
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry,Jiangsu Second Normal University, Nanjing 210003, China.
| | - Qun Dai
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry,Jiangsu Second Normal University, Nanjing 210003, China.
| | - Wei Wei
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry,Jiangsu Second Normal University, Nanjing 210003, China.
| | - Rongrong Luo
- Jiangsu Key Laboratory for Biofunctional Molecules, College of Life Science and Chemistry,Jiangsu Second Normal University, Nanjing 210003, China.
| | - Ling Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.
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30
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Wang H, Regan CJ, Codelli JA, Romanato P, Puchlopek-Dermenci ALA, Reisman SE. Enantioselective Synthesis of (-)-Acetylapoaranotin. Org Lett 2017; 19:1698-1701. [PMID: 28349698 PMCID: PMC5387676 DOI: 10.1021/acs.orglett.7b00418] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first enantioselective total synthesis of the epipolythiodiketopiperazine (ETP) natural product (-)-acetylapoaranotin (3) is reported. The concise synthesis was enabled by an eight-step synthesis of a key cyclohexadienol-containing amino ester building block. The absolute stereochemistry of both amino ester building blocks used in the synthesis is set through catalytic asymmetric (1,3)-dipolar cycloaddition reactions. The formal syntheses of (-)-emethallicin E and (-)-haemotocin are also achieved through the preparation of a symmetric cyclohexadienol-containing diketopiperazine.
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Affiliation(s)
- Haoxuan Wang
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Clinton J Regan
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Julian A Codelli
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Paola Romanato
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Angela L A Puchlopek-Dermenci
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Sarah E Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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31
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Two new polyketides from the ascomycete fungus Leptosphaeria sp. J Antibiot (Tokyo) 2017; 70:743-746. [PMID: 28196973 DOI: 10.1038/ja.2017.5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/13/2016] [Accepted: 12/26/2016] [Indexed: 11/08/2022]
Abstract
Leptosphaerins H and I (1 and 2), two new xanthone derivatives, and six known compounds, leptosphaerin F (3), monodictysin B (4), norlichexanthone (5), leptosphaerin D (6), moniliphenone (7) and emodinbianthrone (8) have been isolated from a scale-up fermentation of the ascomycete fungus Leptosphaeria sp. Their structures were primarily elucidated by interpretation of NMR spectroscopic data. The absolute configuration of 1 was assigned using the modified Mosher method, whereas that of C-8a in 2 was determined via the CD data. Compound 6 showed modest cytotoxicity against a panel of three human tumor cell lines.
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32
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Chunyu WX, Ding ZG, Zhao JY, Wang YX, Han XL, Li MG, Wen ML. Two new diketopiperazines from the tin mine tailings-derived fungus Schizophyllum commune YIM DT 10058. Nat Prod Res 2017; 31:1566-1572. [DOI: 10.1080/14786419.2016.1274894] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Wei-Xun Chunyu
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Zhang-Gui Ding
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Jiang-Yuan Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource of the Ministry of Education, Yunnan University, Kunming, PR China
| | - Yong-Xia Wang
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Xiu-Lin Han
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Ming-Gang Li
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Meng-Liang Wen
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
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33
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Niu S, Liu D, Shao Z, Proksch P, Lin W. Eutypellazines A–M, thiodiketopiperazine-type alkaloids from deep sea derived fungus Eutypella sp. MCCC 3A00281. RSC Adv 2017. [DOI: 10.1039/c7ra05774a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bioassay and NMR/MS guided fractionation resulted in the isolation of 13 new alkaloids from marine fungus Eutypella sp.
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Affiliation(s)
- Siwen Niu
- State Key Laboratory of Natural and Biomimetic Drugs
- Peking University
- Beijing
- P. R. China
- Key Laboratory of Marine Biogenetic Resources
| | - Dong Liu
- State Key Laboratory of Natural and Biomimetic Drugs
- Peking University
- Beijing
- P. R. China
| | - Zongze Shao
- Key Laboratory of Marine Biogenetic Resources
- Third Institute of Oceanography
- SOA
- Xiamen
- P. R. China
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology
- Heinrich-Heine University
- 40225 Duesseldorf
- Germany
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs
- Peking University
- Beijing
- P. R. China
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34
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Meng LH, Li XM, Liu Y, Xu GM, Wang BG. Antimicrobial alkaloids produced by the mangrove endophyte Penicillium brocae MA-231 using the OSMAC approach. RSC Adv 2017. [DOI: 10.1039/c7ra12081h] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The OSMAC (one strain-many compounds) protocol was used in this study to obtain various metabolites from the mangrove-derived endophytic fungus Penicillium brocae MA-231.
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Affiliation(s)
- Ling-Hong Meng
- Key Laboratory of Experimental Marine Biology
- Institute of Oceanology
- Chinese Academy of Sciences
- Laboratory of Marine Biology and Biotechnology
- Qingdao National Laboratory for Marine Science and Technology
| | - Xiao-Ming Li
- Key Laboratory of Experimental Marine Biology
- Institute of Oceanology
- Chinese Academy of Sciences
- Laboratory of Marine Biology and Biotechnology
- Qingdao National Laboratory for Marine Science and Technology
| | - Yang Liu
- Key Laboratory of Experimental Marine Biology
- Institute of Oceanology
- Chinese Academy of Sciences
- Laboratory of Marine Biology and Biotechnology
- Qingdao National Laboratory for Marine Science and Technology
| | - Gang-Ming Xu
- Key Laboratory of Experimental Marine Biology
- Institute of Oceanology
- Chinese Academy of Sciences
- Laboratory of Marine Biology and Biotechnology
- Qingdao National Laboratory for Marine Science and Technology
| | - Bin-Gui Wang
- Key Laboratory of Experimental Marine Biology
- Institute of Oceanology
- Chinese Academy of Sciences
- Laboratory of Marine Biology and Biotechnology
- Qingdao National Laboratory for Marine Science and Technology
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35
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High-throughput sequencing-based analysis of endogenetic fungal communities inhabiting the Chinese Cordyceps reveals unexpectedly high fungal diversity. Sci Rep 2016; 6:33437. [PMID: 27625176 PMCID: PMC5022047 DOI: 10.1038/srep33437] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 08/26/2016] [Indexed: 11/23/2022] Open
Abstract
Chinese Cordyceps, known in Chinese as “DongChong XiaCao”, is a parasitic complex of a fungus (Ophiocordyceps sinensis) and a caterpillar. The current study explored the endogenetic fungal communities inhabiting Chinese Cordyceps. Samples were collected from five different geographical regions of Qinghai and Tibet, and the nuclear ribosomal internal transcribed spacer-1 sequences from each sample were obtained using Illumina high-throughput sequencing. The results showed that Ascomycota was the dominant fungal phylum in Chinese Cordyceps and its soil microhabitat from different sampling regions. Among the Ascomycota, 65 genera were identified, and the abundant operational taxonomic units showed the strongest sequence similarity to Ophiocordyceps, Verticillium, Pseudallescheria, Candida and Ilyonectria Not surprisingly, the genus Ophiocordyceps was the largest among the fungal communities identified in the fruiting bodies and external mycelial cortices of Chinese Cordyceps. In addition, fungal communities in the soil microhabitats were clustered separately from the external mycelial cortices and fruiting bodies of Chinese Cordyceps from different sampling regions. There was no significant structural difference in the fungal communities between the fruiting bodies and external mycelial cortices of Chinese Cordyceps. This study revealed an unexpectedly high diversity of fungal communities inhabiting the Chinese Cordyceps and its microhabitats.
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36
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Lugtenberg BJJ, Caradus JR, Johnson LJ. Fungal endophytes for sustainable crop production. FEMS Microbiol Ecol 2016; 92:fiw194. [PMID: 27624083 DOI: 10.1093/femsec/fiw194] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/08/2016] [Indexed: 11/12/2022] Open
Abstract
This minireview highlights the importance of endophytic fungi for sustainable agriculture and horticulture production. Fungal endophytes play a key role in habitat adaptation of plants resulting in improved plant performance and plant protection against biotic and abiotic stresses. They encode a vast variety of novel secondary metabolites including volatile organic compounds. In addition to protecting plants against pathogens and pests, selected fungal endophytes have been used to remove animal toxicities associated with fungal endophytes in temperate grasses, to create corn and rice plants that are tolerant to a range of biotic and abiotic stresses, and for improved management of post-harvest control. We argue that practices used in plant breeding, seed treatments and agriculture, often caused by poor knowledge of the importance of fungal endophytes, are among the reasons for the loss of fungal endophyte diversity in domesticated plants and also accounts for the reduced effectiveness of some endophyte strains to confer plant benefits. We provide recommendations on how to mitigate against these negative impacts in modern agriculture.
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Affiliation(s)
- Ben J J Lugtenberg
- Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, the Netherlands
| | - John R Caradus
- Grasslanz Technology Limited, PB 11008, Palmerston North, 4442, New Zealand
| | - Linda J Johnson
- Forage Science, AgResearch Limited, PB 11008, Palmerston North, 4442, New Zealand
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37
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Lin J, Wang R, Xu G, Ding Z, Zhu X, Liu X, Zou J, Chen G, Li L, Liu L. New cadinane sesquiterpenoids from the basidiomycetous fungus Pholiota sp. RSC Adv 2016. [DOI: 10.1039/c6ra22448b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The basidiomycetous fungus Pholiota sp. produced five new cadinane sesquiterpenoids pholiotins A–E (1–5). The absolute configurations were determined by X-ray diffraction, the Snatzke's method and electronic circular dichroism (ECD) calculations.
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38
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Zhong S, Wandler AEE, Schepers U, Nieger M, Bräse S. Synthesis of New Diketopiperazines, Thiolation to Thiodiketopiperazines, and Examination of Their ROS-Generating Properties. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500900] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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Ji CH, Zhang XH. DFT study on the mechanism of Pd(OAc)2-catalyzed hydrothiolation of alkenes bearing heteroatoms with benzenethiol. Struct Chem 2015. [DOI: 10.1007/s11224-015-0673-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Wen H, Li Y, Liu X, Ye W, Yao X, Che Y. Fusagerins A-F, New Alkaloids from the Fungus Fusarium sp. NATURAL PRODUCTS AND BIOPROSPECTING 2015; 5:195-203. [PMID: 26329590 PMCID: PMC4567992 DOI: 10.1007/s13659-015-0067-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 08/10/2015] [Indexed: 05/14/2023]
Abstract
Fusagerins A-F (1-6), six new alkaloids including a unique one with the rare a-(N-formyl)carboxamide moiety (1), a hydantoin (imidazolidin-2,4-dione) derivative (2), and four fungerin analogues (3-6), were isolated from the crude extract of the fungus Fusarium sp., together with the known compound fungerin (7). Compound 2 was isolated as a racemate and further separated into two enantiomers on a chiral HPLC column. The structures of 1-6 were determined mainly by NMR experiments, and the absolute configuration of 1 and 2 was assigned by electronic circular dichroism (ECD) calculations. Compound 7 showed antibacterial activity against Staphylococcus aureus and Streptococcus pneumoniae, and weak cytotoxicity against the T24 cells.
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Affiliation(s)
- Hao Wen
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Yan Li
- State Key Laboratory of Toxicology & Medical Countermeasures, Beijing Institute of Pharmacology & Toxicology, Beijing, 100850, People's Republic of China
| | - Xingzhong Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China
| | - Wencai Ye
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Xinsheng Yao
- Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China.
| | - Yongsheng Che
- State Key Laboratory of Toxicology & Medical Countermeasures, Beijing Institute of Pharmacology & Toxicology, Beijing, 100850, People's Republic of China.
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41
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Ma X, Wang W, Li E, Gao F, Guo L, Pei Y. A new sesquiterpene from the entomogenous fungus Phomopsis amygdali. Nat Prod Res 2015; 30:276-80. [PMID: 26181224 DOI: 10.1080/14786419.2015.1055742] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A new sesquiterpene, (+)-S-1-methyl-abscisic-6-acid (1), together with five known compounds, (+)-S-abscisic acid (2), fusicoccin J (3), 3α-hydroxyfusicoccin J (4), (R)-5-hydroxymethylmellein (5) and 4-hydroxyphenethyl acetate (6) was isolated from the fermentation extract of Phomopsis amygdali, an entomogenous fungus isolated from Call midge. Their structures were determined mainly by analysis of MS and NMR spectroscopic data. Compounds 1-6 were tested for antimicrobial activity against three plant pathogenic fungi: Gibberella zeae, Verticillium albo-atrum, and Fusarium nivale, and two bacteria: Escherichia coli and Pseudomonas aeruginosa 2033E. As a result, compounds 1-4 displayed antibacterial activity against Gram-negative P. aeruginosa 2033E, and the minimum inhibition concentration (MIC value) of 1-4 is 30 μg/mL, 58 μg/mL, 26 μg/mL, and 26 μg/mL, respectively.
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Affiliation(s)
- Xiaoli Ma
- a College of Life and Environmental Sciences, Minzu University of China , Beijing 100081 , P.R. China.,b State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences , Beijing 100101 , P.R. China
| | - Wenshu Wang
- a College of Life and Environmental Sciences, Minzu University of China , Beijing 100081 , P.R. China.,c Beijing Engineering Research Center of Food Environment and Health, Minzu University of China , Beijing 100081 , P.R. China
| | - Erwei Li
- b State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences , Beijing 100101 , P.R. China
| | - Fenghua Gao
- a College of Life and Environmental Sciences, Minzu University of China , Beijing 100081 , P.R. China
| | - Liangdong Guo
- b State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences , Beijing 100101 , P.R. China
| | - Yunfei Pei
- b State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences , Beijing 100101 , P.R. China
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Abstract
Cordyceps, as a general term, describes a group of ascomycetous fungi growing on arthropods and other related fungi. Some cordyceps have been used in traditional Chinese medicine for centuries and cordyceps-derived products are currently a big industry in China. A number of medicinal and health products have been developed and extensively commercialized from natural Chinese cordyceps, its anamorphic fungus (Hirsutella sinensis), and other fungi known as Chinese cordyceps. The lack of a defined classification system for medicinal cordyceps fungi is a source of confusion in the industry and the public, and even among pharmaceutical scientists. This review summarizes the cordyceps fungi currently used in the industry in China with a special reference to clarify Chinese cordyceps and associated fungi. Cordyceps militaris, Cordyceps guangdongensis and Isaria cicadae are well recognized and commercialized cordyceps fungi in China. Except the natural Chinese cordyceps and its anamorphic fungus, Paecilomyces hepiali, Mortierella hepiali, Cephalosporium sinensis and Clonostachys rosea isolated from natural Chinese cordyceps are classified as Chinese cordyceps–associated fungi. P. hepiali is a cordyceps fungus based on current phylogenetic analysis of Hypocreales, while M. hepiali is a fungus in the Zygomycetes and should only be treated as associated fungus of Chinese cordyceps. C. sinensis and C. rosea belong to the Hypocreales and their relationship to cordyceps fungi should be further studied. The exploitation of the resources of cordyceps fungi and their quality control in the industry should be major topics for future studies. Cooperation between the industry and the research community will enhance the whole cordyceps industry.
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Affiliation(s)
- Caihong Dong
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, No 3 Park 1, Beichen West Road, Chaoyang District, Beijing100101, China
| | - Suping Guo
- Bioengineering Laboratory, Shanxi Research Institute for Medicine and Life Science, Taiyuan030006, China
| | - Wenfeng Wang
- Research and Development Department, Jiangsu Shenhua Pharmaceutical Co., Ltd., Huaian211600, China
| | - Xingzhong Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, No 3 Park 1, Beichen West Road, Chaoyang District, Beijing100101, China
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43
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Graphiumins, new thiodiketopiperazines from the marine-derived fungus Graphium sp. OPMF00224. J Antibiot (Tokyo) 2015; 68:620-7. [DOI: 10.1038/ja.2015.41] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 03/01/2015] [Accepted: 03/24/2015] [Indexed: 01/03/2023]
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44
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Evaluation of chemical constituents and important mechanism of pharmacological biology in dendrobium plants. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:841752. [PMID: 25945114 PMCID: PMC4402476 DOI: 10.1155/2015/841752] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/09/2015] [Indexed: 01/09/2023]
Abstract
Dendrobium species, commonly known as “Shihu” or “Huangcao,” represents the second largest genus of Orchidaceae, which are used commonly as tonic herbs and healthy food in many Asian countries. The aim of this paper is to review the history, chemistry, and pharmacology of different Dendrobium species on the basis of the latest academic literatures found in Google Scholar, PubMed, Sciencedirect, Scopus, and SID.
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Belov DS, Ratmanova NK, Andreev IA, Kurkin AV. Synthesis of bicyclic proline derivatives by the aza-Cope-Mannich reaction: formal synthesis of (±)-acetylaranotin. Chemistry 2015; 21:4141-7. [PMID: 25631763 DOI: 10.1002/chem.201405811] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Indexed: 11/11/2022]
Abstract
Herein we suggest an approach to oxygenated bicyclic amino acids based on an aza-Cope-Mannich rearrangement. Seven distinct amino acid scaffolds analogous to the natural products were prepared on a gram scale with precise control of stereochemistry. Successful implementation of our strategy resulted in the formal synthesis of acetylaranotin.
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Affiliation(s)
- Dmitry S Belov
- Lomonosov Moscow State University, Department of Chemistry, 1/3 Leninskie Gory, Moscow, 119991 (Russia) www.chem.msu.ru; EDASA Scientific srls., Via Stingi, 37, 66050 San Salvo (CH) (Italy) www.edasascientific.com.
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Zhang X, Wang K. Theoretical investigation of the mechanism of gold(i)-catalyzed hydrothiolation of alkynes and alkenes with phenthiol. RSC Adv 2015. [DOI: 10.1039/c5ra01883h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanisms of gold-catalyzed hydrothiolation of alkynes and alkenes with phenthiol have been investigated using density functional theory calculations.
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Affiliation(s)
- XingHui Zhang
- College of Chemical Engineering
- Lanzhou University of Arts and Science
- Lanzhou, China
| | - KeTai Wang
- College of Chemical Engineering
- Lanzhou University of Arts and Science
- Lanzhou, China
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Ganihigama DU, Sureram S, Sangher S, Hongmanee P, Aree T, Mahidol C, Ruchirawat S, Kittakoop P. Antimycobacterial activity of natural products and synthetic agents: Pyrrolodiquinolines and vermelhotin as anti-tubercular leads against clinical multidrug resistant isolates of Mycobacterium tuberculosis. Eur J Med Chem 2015; 89:1-12. [DOI: 10.1016/j.ejmech.2014.10.026] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 10/09/2014] [Accepted: 10/10/2014] [Indexed: 11/28/2022]
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Zhang XH, Geng ZY, Wang KT, Li SS. Mechanism of the palladium-catalyzed hydrothiolation of alkynes to thioethers: a DFT study. J Mol Model 2014; 20:2409. [PMID: 25138374 DOI: 10.1007/s00894-014-2409-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 07/30/2014] [Indexed: 12/26/2022]
Abstract
The mechanisms of the palladium-catalyzed hydrothiolation of alkynes with thiols were investigated using density functional theory at the B3LYP/6-31G(d, p) (SDD for Pd) level. Solvent effects on these reactions were explored using the polarizable continuum model (PCM) for the solvent tetrahydrofuran (THF). Markovnikov-type vinyl sulfides or cis-configured anti-Markovnikov-type products were formed by three possible pathways. Our calculation results suggested the following: (1) the first step of the cycle is a proton-transfer process from thiols onto the palladium atom to form a palladium-thiolate intermediate. The palladium-thiolate species is attacked on alkynes to obtain an elimination product, liberating the catalyst. (2) The higher activation energies for the alkyne into the palladium-thiolate bond indicate that this step is the rate-determining step. The Markovnikov-type vinyl sulfide product is favored. However, for the aromatic alkyne, the cis-configured anti-Markovnikov-type product is favored. (3) The activation energy would reduce when thiols are substituted with an aromatic group. Our calculated results are consistent with the experimental observations of Frech and colleagues for the palladium-catalyzed hydrothiolation of alkynes to thiols.
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Affiliation(s)
- Xing-hui Zhang
- College of Chemical Engineering, Lanzhou University of Arts and Science, Lanzhou, Gansu, 730010, People's Republic of China,
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El Amrani M, Lai D, Debbab A, Aly AH, Siems K, Seidel C, Schnekenburger M, Gaigneaux A, Diederich M, Feger D, Lin W, Proksch P. Protein kinase and HDAC inhibitors from the endophytic fungus Epicoccum nigrum. JOURNAL OF NATURAL PRODUCTS 2014; 77:49-56. [PMID: 24328302 DOI: 10.1021/np4005745] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A chemical investigation of the endophytic fungus Epicoccum nigrum isolated from leaves of Mentha suaveolens collected in Morocco resulted in the isolation of five new polyketides, epicocconigrones A and B (1 and 2), 3-methoxyepicoccone B (3), 3-methoxyepicoccone (4), and 2,3,4-trihydroxy-6-(methoxymethyl)-5-methylbenzaldehyde (5), together with five known compounds (6-10). The structures of the new compounds were unambiguously determined by extensive analysis of the 1D and 2D NMR and mass spectroscopic data. Compounds 1 and 10 showed potent inhibition of at least 15 protein kinases with IC50 values ranging from 0.07 to 9.00 μM. Moreover, compounds 1 and 10 inhibited histone deacetylase (HDAC) activities with IC50 values of 9.8 and 14.2 μM, respectively. A preliminary structure-activity relationship is discussed. Interestingly, compounds 1 and 10 exert mainly cytostatic effects in human lymphoma RAJI and U-937 cell lines.
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Affiliation(s)
- Mustapha El Amrani
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine-Universität Düsseldorf , Universitätsstrasse 1, Geb. 26.23, 40225 Düsseldorf, Germany
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Kong F, Wang Y, Liu P, Dong T, Zhu W. Thiodiketopiperazines from the marine-derived fungus Phoma sp. OUCMDZ-1847. JOURNAL OF NATURAL PRODUCTS 2014; 77:132-137. [PMID: 24370114 DOI: 10.1021/np400802d] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Three new thiodiketopiperazines, named phomazines A-C (1-3), along with 10 known analogues (4-13), were isolated from the fermentation broth of an endophytic fungus, Phoma sp. OUCMDZ-1847, associated with the mangrove plant Kandelia candel. The structures including the absolute configurations of the new compounds were unambiguously elucidated by spectroscopic, X-ray crystallographic, and Mosher's methods along with quantum ECD and (13)C NMR calculations. Compounds 2, 4, 5, 11, and 12 showed cytotoxicities against the HL-60, HCT-116, K562, MGC-803, and A549 cell lines with IC50 values in the range 0.05 to 8.5 μM.
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Affiliation(s)
- Fandong Kong
- Key Laboratory of Marine Drugs, 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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