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Chang JL, Gan YT, Zhou YH, Peng XG, Xie ZY, Meng X, Li SM, Ruan HL. Asperustins A-J: Austocystins with Immunosuppressive and Cytotoxic Activities from Aspergillus ustus NRRL 5856. JOURNAL OF NATURAL PRODUCTS 2024; 87:966-975. [PMID: 38441877 DOI: 10.1021/acs.jnatprod.3c01243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Ten new (1-10) and nine known (11-19) austocystins, along with four known anthraquinones (20-23), were isolated from the culture of Aspergillus ustus NRRL 5856 by bioactivity-guided fractionation. The structures of the new compounds were elucidated by spectroscopic data analysis, X-ray crystallographic study, the modified Mosher's method, [Rh2(OCOCF3)4]-induced ECD spectral analysis, and comparison of the experimental ECD spectra with those of the similar analogues. Compounds 1-8 represent the first examples of austocystins with a C-4' oxygenated substitution. The absolute configuration of 1″-hydroxy austocystin D (11) was determined by single-crystal X-ray diffraction and consideration of its biosynthetic origin. Compounds 5, 9, and 11 exhibited significant inhibitory effects against the proliferation of ConA-induced T cells with IC50 values of 1.1, 1.0, and 0.93 μM, respectively. Furthermore, these compounds suppressed the expression of IL-6 in a dose-dependent manner. Compounds 10-12 and 14 showed pronounced cytotoxicities against MCF-7 with IC50 values of 3.9, 1.3, 0.46, and 2.3 μM, respectively.
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Affiliation(s)
- Jin-Ling Chang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Yu-Tian Gan
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
- Xiangyang Hospital of Traditional Chinese Medicine, Xiangyang 441000, People's Republic of China
| | - Yin-Hui Zhou
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Xiao-Gang Peng
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Zuo-Ye Xie
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
| | - Xianggao Meng
- College of Chemistry, Central China Normal University, Wuhan 430079, People's Republic of China
| | - Shu-Ming Li
- Institut für Pharmazeutische Biologie und Biotechnologie, Fachbereich Pharmazie, Philipps-Universität Marburg, Robert-Koch Straße 4, 35037 Marburg, Germany
| | - Han-Li Ruan
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Wuhan 430030, People's Republic of China
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Wang Z, Chen J, Yu L, Zhang C, Rao W, Chan PWH. Gold-Catalyzed Cascade Cycloisomerization of 3-Allyloxy-1,6-diynes to Cyclopropyl- and Cyclobutyl-Fused Benzofurans and Chromen-3a(1 H)-ols. Org Lett 2024; 26:2635-2640. [PMID: 38526487 DOI: 10.1021/acs.orglett.4c00705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
A synthetic method for the efficient preparation of partially hydrogenated benzo[f]cyclobuta[cd]cyclopenta[h]benzofurans and cyclopropa[c]chromen-3a(1H)-ols that relies on the gold(I)-catalyzed cascade cycloisomerization of 3-allyloxy-1,6-diynes is described.
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Affiliation(s)
- Zeliang Wang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jichao Chen
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Lei Yu
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Chunyu Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Weidong Rao
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
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Deng M, Pu Y, Wan Z, Xu J, Huang S, Xie J, Zhou X. Nine undescribed oxidized ergosterols from the endophytic fungus Penicillium herquei and their cytotoxic activity. PHYTOCHEMISTRY 2023; 212:113716. [PMID: 37156435 DOI: 10.1016/j.phytochem.2023.113716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023]
Abstract
A chemical investigation of the EtOAc extract of the endophytic fungus Penicillium herquei led to the isolation of nine undescribed oxidized ergosterols, penicisterols A-I (1-9), along with ten known analogs (10-19). Their structures and absolute configurations were elucidated by a combination of spectroscopic data analysis, quantum-chemical electronic circular dichroism (ECD) calculations and comparisons, [Rh2(OCOCF3)4]-induced ECD experiments, DFT-calculated 13C chemical shifts and DP4+ probability analysis. Compound 1 was a rare example of ergosterol in which the bond between C-8 and C-9 is cleaved to form an enol ether. Moreover, compound 2 possessed a rare (2,5-dioxo-4-imidazolidinyl)-carbamic acid ester group substituted at C-3. All undescribed oxidized ergosterols (1-9) were evaluated for their cytotoxic activity against five cancer cell lines including 4T1 (mouse breast carcinoma), A549 (human pulmonary carcinoma), HCT-116 (human colorectal carcinoma), HeLa (human cervical carcinoma) and Hepg2 (human hepatoma carcinoma) cells. Compounds 2 and 3 displayed moderate cytotoxic activity against 4T1, A549 and HeLa cells, with IC50 values ranging from 17.22 to 31.35 μM.
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Affiliation(s)
- Mengyi Deng
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, PR China; Southwest Jiaotong University, Affiliated Hospital, The Third People's Hospital of Chengdu, Chengdu, 610000, Sichuan, PR China
| | - Yangli Pu
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, PR China
| | - Zhenling Wan
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, PR China
| | - Jinbo Xu
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, PR China
| | - Shuai Huang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, PR China
| | - Jiang Xie
- Southwest Jiaotong University, Affiliated Hospital, The Third People's Hospital of Chengdu, Chengdu, 610000, Sichuan, PR China
| | - Xianli Zhou
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, Sichuan, PR China; Southwest Jiaotong University, Affiliated Hospital, The Third People's Hospital of Chengdu, Chengdu, 610000, Sichuan, PR China.
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Nguyen TH, Wang SL, Nguyen VB. Microorganism-Derived Molecules as Enzyme Inhibitors to Target Alzheimer's Diseases Pathways. Pharmaceuticals (Basel) 2023; 16:ph16040580. [PMID: 37111337 PMCID: PMC10146315 DOI: 10.3390/ph16040580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia. It increases the risk of other serious diseases and causes a huge impact on individuals, families, and socioeconomics. AD is a complex multifactorial disease, and current pharmacological therapies are largely based on the inhibition of enzymes involved in the pathogenesis of AD. Natural enzyme inhibitors are the potential sources for targeting AD treatment and are mainly collected from plants, marine organisms, or microorganisms. In particular, microbial sources have many advantages compared to other sources. While several reviews on AD have been reported, most of these previous reviews focused on presenting and discussing the general theory of AD or overviewing enzyme inhibitors from various sources, such as chemical synthesis, plants, and marine organisms, while only a few reviews regarding microbial sources of enzyme inhibitors against AD are available. Currently, multi-targeted drug investigation is a new trend for the potential treatment of AD. However, there is no review that has comprehensively discussed the various kinds of enzyme inhibitors from the microbial source. This review extensively addresses the above-mentioned aspect and simultaneously updates and provides a more comprehensive view of the enzyme targets involved in the pathogenesis of AD. The emerging trend of using in silico studies to discover drugs concerning AD inhibitors from microorganisms and perspectives for further experimental studies are also covered here.
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Affiliation(s)
- Thi Hanh Nguyen
- Doctoral Program in Applied Sciences, Tamkang University, New Taipei City 25137, Taiwan
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - San-Lang Wang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Van Bon Nguyen
- Institute of Biotechnology and Environment, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam
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Anti-Alzheimer's Natural Products Derived from Plant Endophytic Fungi. Molecules 2023; 28:molecules28052259. [PMID: 36903506 PMCID: PMC10005758 DOI: 10.3390/molecules28052259] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/25/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023] Open
Abstract
Alzheimer's is the most common cause of dementia worldwide and seriously affects patients' daily tasks. Plant endophytic fungi are known for providing novel and unique secondary metabolites with diverse activities. This review focuses primarily on the published research regarding anti-Alzheimer's natural products derived from endophytic fungi between 2002 and 2022. Following a thorough review of the literature, 468 compounds with anti-Alzheimer's-related activities are reviewed and classified based on their structural skeletons, primarily including alkaloids, peptides, polyketides, terpenoids, and sterides. The classification, occurrences, and bioactivities of these natural products from endophytic fungi are summarized in detail. Our results provide a reference on endophytic fungi natural products that may assist in the development of new anti-Alzheimer's compounds.
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Zhou L, Chen HP, Li X, Liu JK. Ganoaustralins A and B, Unusual Aromatic Triterpenes from the Mushroom Ganoderma australe. Pharmaceuticals (Basel) 2022; 15:ph15121520. [PMID: 36558971 PMCID: PMC9785556 DOI: 10.3390/ph15121520] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022] Open
Abstract
Two triterpenes, ganoaustralins A (1) and B (2), featuring unprecedented 6/6/6/5/6 scaffolds were isolated from the fruiting bodies of the mushroom Ganoderma australe. The structures were determined by extensive NMR and HRESIMS spectroscopic analysis. The absolute configuration of the C-25 in ganoaustralin A was assigned by the phenylglycine methyl ester (PGME) method. The relative and absolute configurations of the polycyclic backbones were determined by NMR and ECD calculations, respectively. The plausible biosynthetic pathways of ganoaustralins A and B were proposed. Ganoaustralin B showed weak inhibition against β-secretase 1.
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Affiliation(s)
- Lin Zhou
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - He-Ping Chen
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
| | - Xinyang Li
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
- Correspondence: (X.L.); or (J.-K.L.)
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China
- Correspondence: (X.L.); or (J.-K.L.)
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Chen Y, Wang H, Ke X, Sang Z, Kuang M, Peng W, Tan J, Zheng Y, Zou Z, Tan H. Five new secondary metabolites from an endophytic fungus Phomopsis sp. SZSJ-7B. FRONTIERS IN PLANT SCIENCE 2022; 13:1049015. [PMID: 36452113 PMCID: PMC9702824 DOI: 10.3389/fpls.2022.1049015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 10/14/2022] [Indexed: 06/17/2023]
Abstract
Two previously undescribed lactones, phomolides A and B (1 and 2), and three new sesquiterpenoids, phomenes A-C (3-5), together with one known compound, colletotricholide A (6), were isolated from the endophytic fungus Phomopsis sp. SZSJ-7B. Their chemical structures, including the absolute configurations, were comprehensively established by extensive analyses of NMR, high-resolution electrospray ionization mass spectrometry, electronic circular dichroism powered by theoretical calculations, and X-ray diffractions. Moreover, the cytotoxic and antibacterial activities of compounds 1-6 were also evaluated, and the results demonstrated that compound 2 showed significant antibacterial effects towards methicillin-resistant Staphylococcus aureus and S. aureus strains with minimum inhibitory concentration as low as 6.25 μg/ml, which was comparable to that of the clinical drug vancomycin. Moreover, all compounds showed no cytotoxic activity.
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Affiliation(s)
- Yan Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Huan Wang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Xin Ke
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Zihuan Sang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Min Kuang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
| | - Weiwei Peng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Jianbing Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
| | - Yuting Zheng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
| | - Zhenxing Zou
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
| | - Haibo Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases, Central South University, Changsha, China
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
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Epigenetic Manipulation Induced Production of Immunosuppressive Chromones and Cytochalasins from the Mangrove Endophytic Fungus Phomopsis asparagi DHS-48. Mar Drugs 2022; 20:md20100616. [PMID: 36286441 PMCID: PMC9605342 DOI: 10.3390/md20100616] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/26/2022] [Accepted: 09/28/2022] [Indexed: 11/16/2022] Open
Abstract
A mangrove endophytic fungus Phomopsis asparagi DHS-48 was found to be particularly productive with regard to the accumulation of substantial new compounds in our previous study. In order to explore its potential to produce more unobserved secondary metabolites, epigenetic manipulation was used on this fungus to activate cryptic or silent genes by using the histone deacetylase (HDAC) inhibitor sodium butyrate and the DNA methyltransferase (DNMT) inhibitor 5-azacytidine (5-Aza). Based on colony growth, dry biomass, HPLC, and 1H NMR analyses, the fungal chemical diversity profile was significantly changed compared with the control. Two new compounds, named phaseolorin J (1) and phomoparagin D (5), along with three known chromones (2–4) and six known cytochalasins (6–11), were isolated from the culture treated with sodium butyrate. Their structures, including their absolute configurations, were elucidated using a combination of detailed HRESIMS, NMR, and ECD and 13C NMR calculations. The immunosuppressive and cytotoxic activities of all isolated compounds were evaluated. Compounds 1 and 8 moderately inhibited the proliferation of ConA (concanavalin A)-induced T and LPS (lipopolysaccharide)-induced B murine spleen lymphocytes. Compound 5 exhibited significant in vitro cytotoxicity against the tested human cancer cell lines Hela and HepG2, which was comparative to the positive control adriamycin and fluorouracil. Our finding demonstrated that epigenetic manipulation should be an efficient strategy for the induction of new metabolites from mangrove endophytic fungi.
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Immunosuppressive Cytochalasins from the Mangrove Endophytic Fungus Phomopsis asparagi DHS-48. Mar Drugs 2022; 20:md20080526. [PMID: 36005528 PMCID: PMC9409992 DOI: 10.3390/md20080526] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/09/2022] [Accepted: 08/16/2022] [Indexed: 12/16/2022] Open
Abstract
Three new cytochalasins, phomoparagins A-C (1–3), along with five known analogs (4–8), were isolated from Phomopsis asparagi DHS-48, a mangrove-derived endophytic fungus. Their structures, including their absolute configurations, were elucidated using a combination of detailed HRESIMS, NMR, and ECD techniques. Notably, 1 possessed an unprecedented 5/6/5/8/5-fused pentacyclic skeleton. These compounds were tested for their inhibitory activity against concanavalin A (ConA)/lipopolysaccharide (LPS)-induced spleen lymphocyte proliferation and calcineurin (CN) enzyme. Several metabolites (2 and 4–6) exhibited fascinating inhibitory activities with a relatively low toxicity. Furthermore, 2 was demonstrated to inhibit ConA-stimulated activation of NFAT1 dephosphorylation and block NFAT1 translocation in vitro, subsequently inhibiting the transcription of interleukin-2 (IL-2). Our results provide evidence that 2 may, at least partially, suppress the activation of spleen lymphocytes via the CN/NFAT signaling pathway, highlighting that it could serve as an effective immunosuppressant that is noncytotoxic and natural.
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Amirzakariya BZ, Shakeri A. Bioactive terpenoids derived from plant endophytic fungi: An updated review (2011-2020). PHYTOCHEMISTRY 2022; 197:113130. [PMID: 35183568 DOI: 10.1016/j.phytochem.2022.113130] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 01/17/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Plant endophytes have been considered as novel sources of naturally occurring compounds with various biological activities, including cytotoxic, antimicrobial, anti-inflammatory, anticancer, herbicides, antileishmanial and antioxidant. A variety of specialised products, comprising terpenoids, alkaloids, polyketides, phenolic compounds, coumarins, and quinone derivatives have been reported from various strains. An increasing number of products, especially terpenoids, are being isolated from endophytes. Herein, the isolated new terpenoids from plant endophytic fungi, their hosts, as well as biological activities, from January 2011 until the end of 2020 are reviewed. In this period, 516 terpenoids are classified into monoterpenes (5), sesquiterpenes (299), diterpenes (76), sesterterpens (22), meroterpenes (83), triterpenes (29), and other terpenoids (2), were isolated from different plant endophytic fungi species.
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Affiliation(s)
| | - Abolfazl Shakeri
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Deng M, Chen X, Qiao Y, Shi Z, Wang J, Zhu H, Gu L, Qi C, Zhang Y. Isolation, absolute configurations and bioactivities of pestaphilones A-I: Undescribed methylated side chain containing-azaphilones from Pestalotiopsis oxyanthi. PHYTOCHEMISTRY 2022; 194:113045. [PMID: 34875525 DOI: 10.1016/j.phytochem.2021.113045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 11/25/2021] [Accepted: 11/27/2021] [Indexed: 06/13/2023]
Abstract
Nine undescribed side chain containing azaphilones, pestaphilones A-I, were isolated from the Anoectochilus roxburghii endophytic fungus Pestalotiopsis oxyanthi. The structures of these isolates were identified by spectroscopic data, electronic circular dichroism (ECD) calculations and comparisons, quantum-chemical 13C NMR calculations with DP4+ probability analysis, Rh2(OCOCF3)4-induced ECD, acetonide formation, selective oxidation reaction and X-ray crystallographic data. Structurally, pestaphilones A-I were the first azaphilones characteristically formed via a methyl group at C-9 in the C7 side chain. More importantly, a selective oxidation reaction was firstly set up to resolve the absolute configuration of flexible side chain containing azaphilones, and an acetonide formation based Rh2(OCOCF3)4-induced ECD experiment was performed to identify the configurations of the oxygenated pyranoquinone core in the azaphilones. In bioassay, pestaphilones A-F displayed potential immunosuppressive activity in concanavalin A (Con A)-induced T lymphocyte proliferation, with IC50 values ranging from (9.36 ± 1.14) μM to (35.21 ± 3.25) μM.
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Affiliation(s)
- Mengyi Deng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Xia Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Yuben Qiao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Zhengyi Shi
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Lianghu Gu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Changxing Qi
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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Galindo-Solís JM, Fernández FJ. Endophytic Fungal Terpenoids: Natural Role and Bioactivities. Microorganisms 2022; 10:microorganisms10020339. [PMID: 35208794 PMCID: PMC8875210 DOI: 10.3390/microorganisms10020339] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 02/01/2023] Open
Abstract
Endophytic fungi are a highly diverse group of fungi that intermittently colonize all plants without causing symptoms of the disease. They sense and respond to physiological and environmental changes of their host plant and microbiome. The inter-organism interactions are largely driven by chemical networks mediated by specialized metabolites. The balance of these complex interactions leads to healthy and strong host plants. Endophytic strains have particular machinery to produce a plethora of secondary metabolites with a variety of bioactivities and unknown functions in an ecological niche. Terpenoids play a key role in endophytism and represent an important source of bioactive molecules for human health and agriculture. In this review, we describe the role of endophytic fungi in plant health, fungal terpenoids in multiple interactions, and bioactive fungal terpenoids recently reported from endophytes, mainly from plants used in traditional medicine, as well as from algae and mangroves. Additionally, we highlight endophytic fungi as producers of important chemotherapeutic terpenoids, initially discovered in plants. Despite advances in understanding endophytism, we still have much to learn in this field. The study of the role, the evolution of interactions of endophytic fungi and their terpenoids provide an opportunity for better applications in human health and agriculture.
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Affiliation(s)
- Juan M. Galindo-Solís
- Posgrado en Biotecnología, Universidad Autonoma Metropolitana, Unidad Iztapalapa, Mexico City CP 09340, Mexico;
| | - Francisco J. Fernández
- Departamento de Biotecnología, Universidad Autónoma Metropolitana, Unidad Iztapalapa, San Rafael Atlixco No. 186, Col. Vicentina, Mexico City CP 09340, Mexico
- Correspondence: ; Tel.: +52-(55)-5804-6453
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Design, synthesis and biological evaluation of difluoroalkylated protoilludanes obtained by a practical radical cascade difluoroalkylation-cyclization reaction. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2021.153594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Liu HB, Liu ZM, Chen YC, Tan HB, Li SN, Li DL, Liu HX, Zhang WM. Cytotoxic diaporindene and tenellone derivatives from the fungus Phomopsis lithocarpus. Chin J Nat Med 2021; 19:874-880. [PMID: 34844726 DOI: 10.1016/s1875-5364(21)60095-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Indexed: 11/25/2022]
Abstract
Nine new compounds, including five natural rarely-occurring 2, 3-dihydro-1H-indene derivatives named diaporindenes E-I (1-5), and four new benzophenone analogues named tenellones J-M (6-9) were isolated from the deep-sea sediment-derived fungus Phomopsis lithocarpus FS508. All the structures for these new compounds were fully characterized on the basis of spectroscopic data, NMR spectra, and ECD calculation and single-crystal X-ray diffraction analysis. The potential anti-tumor activities of compounds 1-9 against four tumor cell lines SF-268, MCF-7, HepG-2, and A549 were evaluated using the SRB method. Compound 7 exhibited cytotoxic activity against the SF-268 cell line with an IC50 value of 11.36 μmol·L-1.
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Affiliation(s)
- Hui-Bo Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China; School of Chemical and Environmental Engineering, Wuyi University, Jiangmen 529020, China
| | - Zhao-Ming Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Yu-Chan Chen
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Hai-Bo Tan
- Program for Natural Products Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Sai-Ni Li
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China
| | - Dong-Li Li
- School of Chemical and Environmental Engineering, Wuyi University, Jiangmen 529020, China
| | - Hong-Xin Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China.
| | - Wei-Min Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou 510070, China.
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15
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Dai Q, Zhang FL, Feng T. Sesquiterpenoids Specially Produced by Fungi: Structures, Biological Activities, Chemical and Biosynthesis (2015-2020). J Fungi (Basel) 2021; 7:1026. [PMID: 34947008 PMCID: PMC8705726 DOI: 10.3390/jof7121026] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 11/28/2021] [Accepted: 11/28/2021] [Indexed: 12/28/2022] Open
Abstract
Fungi are widely distributed in the terrestrial environment, freshwater, and marine habitat. Only approximately 100,000 of these have been classified although there are about 5.1 million characteristic fungi all over the world. These eukaryotic microbes produce specialized metabolites and participate in a variety of ecological functions, such as quorum detection, chemical defense, allelopathy, and maintenance of symbiosis. Fungi therefore remain an important resource for the screening and discovery of biologically active natural products. Sesquiterpenoids are arguably the richest natural products from plants and micro-organisms. The rearrangement of the 15 high-ductility carbons gave rise to a large number of different skeletons. At the same time, abundant structural variations lead to a diversification of biological activity. This review examines the isolation, structural determination, bioactivities, and synthesis of sesquiterpenoids that were specially produced by fungi over the past five years (2015-2020).
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Affiliation(s)
| | | | - Tao Feng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430074, China; (Q.D.); (F.-L.Z.)
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16
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Ortega HE, Torres-Mendoza D, Caballero E. Z, Cubilla-Rios L. Structurally Uncommon Secondary Metabolites Derived from Endophytic Fungi. J Fungi (Basel) 2021; 7:570. [PMID: 34356949 PMCID: PMC8308102 DOI: 10.3390/jof7070570] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 01/25/2023] Open
Abstract
Among microorganisms, endophytic fungi are the least studied, but they have attracted attention due to their high biological diversity and ability to produce novel and bioactive secondary metabolites to protect their host plant against biotic and abiotic stress. These compounds belong to different structural classes, such as alkaloids, peptides, terpenoids, polyketides, and steroids, which could present significant biological activities that are useful for pharmacological or medical applications. Recent reviews on endophytic fungi have mainly focused on the production of novel bioactive compounds. Here, we focus on compounds produced by endophytic fungi, reported with uncommon bioactive structures, establishing the neighbor net and diversity of endophytic fungi. The review includes compounds published from January 2015 to December 2020 that were catalogued as unprecedented, rare, uncommon, or possessing novel structural skeletons from more than 39 different genera, with Aspergillus and Penicillium being the most mentioned. They were reported as displaying cytotoxic, antitumor, antimicrobial, antiviral, or anti-inflammatory activity. The solid culture, using rice as a carbon source, was the most common medium utilized in the fermentation process when this type of compound was isolated.
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Affiliation(s)
- Humberto E. Ortega
- Laboratory of Tropical Bioorganic Chemistry, Faculty of Natural, Exact Sciences and Technology, University of Panama, Panama City 0824, Panama; (H.E.O.); (D.T.-M.)
- Department of Organic Chemistry, Faculty of Natural, Exact Sciences and Technology, University of Panama, Panama City 0824, Panama
| | - Daniel Torres-Mendoza
- Laboratory of Tropical Bioorganic Chemistry, Faculty of Natural, Exact Sciences and Technology, University of Panama, Panama City 0824, Panama; (H.E.O.); (D.T.-M.)
- Department of Organic Chemistry, Faculty of Natural, Exact Sciences and Technology, University of Panama, Panama City 0824, Panama
- Vicerrectoría de Investigación y Postgrado, Universidad de Panamá, Panama City 0824, Panama
| | - Zuleima Caballero E.
- Center of Cellular and Molecular Biology of Diseases, Institute for Scientific Research and Technology Services (INDICASAT-AIP), Clayton 0843-01103, Panama;
| | - Luis Cubilla-Rios
- Laboratory of Tropical Bioorganic Chemistry, Faculty of Natural, Exact Sciences and Technology, University of Panama, Panama City 0824, Panama; (H.E.O.); (D.T.-M.)
- Department of Organic Chemistry, Faculty of Natural, Exact Sciences and Technology, University of Panama, Panama City 0824, Panama
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17
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Nagarajan K, Tong WY, Leong CR, Tan WN. Potential of Endophytic Diaporthe sp. as a New Source of Bioactive Compounds. J Microbiol Biotechnol 2021; 31:493-500. [PMID: 32627761 PMCID: PMC9705913 DOI: 10.4014/jmb.2005.05012] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 12/15/2022]
Abstract
Endophytic fungi are symbiotically related to plants and spend most of their life cycle within them. In nature, they have a crucial role in plant micro-ecosystem. They are harnessed for their bioactive compounds to counter human health problems and diseases. Endophytic Diaporthe sp. is a widely distributed fungal genus that has garnered much interest within the scientific community. A substantial number of secondary metabolites have been detected from Diaporthe sp. inhabited in various plants. As such, this minireview highlights the potential of Diaporthe sp. as a rich source of bioactive compounds by emphasizing on their diverse chemical entities and potent biological properties. The bioactive compounds produced are of significant importance to act as new lead compounds for drug discovery and development.
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Affiliation(s)
- Kashvintha Nagarajan
- Chemistry Section, School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Woei-Yenn Tong
- Drug Discovery and Delivery Research Laboratory, Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, 78000 Alor Gajah, Melaka, Malaysia
| | - Chean-Ring Leong
- Drug Discovery and Delivery Research Laboratory, Universiti Kuala Lumpur, Malaysian Institute of Chemical and Bioengineering Technology, 78000 Alor Gajah, Melaka, Malaysia
| | - Wen-Nee Tan
- Chemistry Section, School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia,Corresponding author Phone: +604-6534563 Fax: +604-6576000 E-mail:
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18
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Yan P, Zhong C, Zhang J, Liu Y, Fang H, Lu P. 3‐(Methoxycarbonyl)Cyclobutenone as a Reactive Dienophile in Enantioselective Diels–Alder Reactions Catalyzed by Chiral Oxazaborolidinium Ions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Peng Yan
- Department of Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Changxu Zhong
- Department of Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Jie Zhang
- College of Chemistry and Life Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 P. R. China
| | - Yu Liu
- College of Chemistry and Life Advanced Institute of Materials Science Changchun University of Technology Changchun 130012 P. R. China
| | - Huayi Fang
- School of Materials Science and Engineering Tianjin Key Lab for Rare Earth Materials and Applications Nankai University Tianjin 300350 P. R. China
| | - Ping Lu
- Department of Research Center for Molecular Recognition and Synthesis Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 P. R. China
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19
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Yan P, Zhong C, Zhang J, Liu Y, Fang H, Lu P. 3-(Methoxycarbonyl)Cyclobutenone as a Reactive Dienophile in Enantioselective Diels-Alder Reactions Catalyzed by Chiral Oxazaborolidinium Ions. Angew Chem Int Ed Engl 2021; 60:4609-4613. [PMID: 33201584 DOI: 10.1002/anie.202014308] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/16/2020] [Indexed: 11/06/2022]
Abstract
Cyclobutenone has been used as a highly reactive dienophile in Diels-Alder reactions, however, no enantioselective example has been reported. We disclose herein a chiral oxazaborolidine-aluminum bromide catalyzed enantioselective Diels-Alder reaction of 3-alkoxycarbonyl cyclobutenone with a variety of dienes. Furthermore, a total synthesis of (-)-kingianin F was completed for the first time via enantioenriched cycloadduct bicyclo[4.2.0]octane derivative.
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Affiliation(s)
- Peng Yan
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai, 200433, P. R. China
| | - Changxu Zhong
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai, 200433, P. R. China
| | - Jie Zhang
- College of Chemistry and Life, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, P. R. China
| | - Yu Liu
- College of Chemistry and Life, Advanced Institute of Materials Science, Changchun University of Technology, Changchun, 130012, P. R. China
| | - Huayi Fang
- School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, P. R. China
| | - Ping Lu
- Department of Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai, 200433, P. R. China
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20
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Zhou P, Yan S, Lu Y, Li XN, Zhang M, Li Q, Chen X, Wang J, Zhu H, Chen C, Zhang Y. Five new secondary metabolites from the fungus Phomopsis asparagi. Fitoterapia 2021; 150:104840. [PMID: 33535108 DOI: 10.1016/j.fitote.2021.104840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/12/2021] [Accepted: 01/16/2021] [Indexed: 10/22/2022]
Abstract
Five new compounds, including a pair of diphenylcyclopentenone enantiomers (±)-phomopsisin A (1), a sesquiterpenoid 15-hydroxylithocarin A (2), a new diketopiperazine alkaloid prenylcyclotryprostatin A (3) and 7-hydroxy-cis-L(-)-3,6-dibenzyl-2,5-dioxopiperazine (6), along with five known compounds were isolated from the fungus Phomopsis asparagi. Their structures were elucidated on the basis of spectroscopic analyses (1D and 2D NMR), theoretical electronic circular dichroism (ECD) calculation, modified Mosher's method, and X-ray crystallography. The racemates of (±)-phomopsisin A showed inhibition on α-glucosidase with IC50 of 30.07 ± 0.75 μM (positive control acarbose, 121 ± 2.7 μM).
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Affiliation(s)
- Peng Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Shan Yan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Yuanyuan Lu
- Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong Universty of Science and Technology, Wuhan 430070, Hubei Province, People's Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, Yunnan Province, People's Republic of China
| | - Mi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Qin Li
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Xia Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, People's Republic of China.
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21
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Xu TC, Lu YH, Wang JF, Song ZQ, Hou YG, Liu SS, Liu CS, Wu SH. Bioactive Secondary Metabolites of the Genus Diaporthe and Anamorph Phomopsis from Terrestrial and Marine Habitats and Endophytes: 2010-2019. Microorganisms 2021; 9:217. [PMID: 33494367 PMCID: PMC7912663 DOI: 10.3390/microorganisms9020217] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/17/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
The genus Diaporthe and its anamorph Phomopsis are distributed worldwide in many ecosystems. They are regarded as potential sources for producing diverse bioactive metabolites. Most species are attributed to plant pathogens, non-pathogenic endophytes, or saprobes in terrestrial host plants. They colonize in the early parasitic tissue of plants, provide a variety of nutrients in the cycle of parasitism and saprophytism, and participate in the basic metabolic process of plants. In the past ten years, many studies have been focused on the discovery of new species and biological secondary metabolites from this genus. In this review, we summarize a total of 335 bioactive secondary metabolites isolated from 26 known species and various unidentified species of Diaporthe and Phomopsis during 2010-2019. Overall, there are 106 bioactive compounds derived from Diaporthe and 246 from Phomopsis, while 17 compounds are found in both of them. They are classified into polyketides, terpenoids, steroids, macrolides, ten-membered lactones, alkaloids, flavonoids, and fatty acids. Polyketides constitute the main chemical population, accounting for 64%. Meanwhile, their bioactivities mainly involve cytotoxic, antifungal, antibacterial, antiviral, antioxidant, anti-inflammatory, anti-algae, phytotoxic, and enzyme inhibitory activities. Diaporthe and Phomopsis exhibit their potent talents in the discovery of small molecules for drug candidates.
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Affiliation(s)
| | | | | | | | | | | | | | - Shao-Hua Wu
- Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China; (T.-C.X.); (Y.-H.L.); (J.-F.W.); (Z.-Q.S.); (Y.-G.H.); (S.-S.L.); (C.-S.L.)
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22
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Zhong C, Wang S, Lu P. Chiral lithium amide mediated desymmetrization of 3-substituted cyclobutanone. Org Chem Front 2021. [DOI: 10.1039/d1qo00015b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical approach to access enantioenriched cyclobutenes was developed via a chiral lithium amide mediated deprotonation of 3-substituted cyclobutanones. Further elaborations led to stereoselective assembly of tricyclic skeletons.
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Affiliation(s)
- Changxu Zhong
- Department of Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Shaowei Wang
- Department of Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Ping Lu
- Department of Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
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23
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Chen S, Liu Z, Chen Y, Tan H, Liu H, Zhang W. Tersaphilones A-E, cytotoxic chlorinated azaphilones from the deep-sea-derived fungus Phomopsis tersa FS441. Tetrahedron 2021. [DOI: 10.1016/j.tet.2020.131806] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Maurya JP, Ramasastry SSV. Divergent Michael/Aldol Cascades Under Semi-Aqueous Conditions: Synthesis of Cyclopenta- and Cycloheptannulated (Hetero)arenes. J Org Chem 2021; 86:525-537. [PMID: 33395742 DOI: 10.1021/acs.joc.0c02195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of 3-acetoxyindanones and (hetero)arene-fused dihydrotropones was achieved via divergent annulation cascades. Under mild aqueous and basic conditions, α-substituted enone-aldehydes and 1,3-carbonyls undergo a Michael/aldol/hemiketalization/retro-aldol cascade for the formation of 3-acetoxyindanones possessing two contiguous stereogenic centers, one of which is an all-carbon quaternary center. On the other hand, the same enone-aldehydes generate new classes of fused-dihydrotropones upon reaction with 2,4-dioxobutanoates under merely the same reaction conditions via a Michael/aldol/lactonization/decarboxylation cascade.
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Affiliation(s)
- Jay Prakash Maurya
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S A S Nagar, Manauli PO, Punjab 140 306, India
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S A S Nagar, Manauli PO, Punjab 140 306, India
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25
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Cadelis MM, Copp BR, Wiles S. A Review of Fungal Protoilludane Sesquiterpenoid Natural Products. Antibiotics (Basel) 2020; 9:E928. [PMID: 33352728 PMCID: PMC7765842 DOI: 10.3390/antibiotics9120928] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/18/2020] [Accepted: 12/18/2020] [Indexed: 12/02/2022] Open
Abstract
Natural products have been a great source for drug leads, due to a vast majority possessing unique chemical structures. Such an example is the protoilludane class of natural products which contain an annulated 5/6/4-ring system and are almost exclusively produced by fungi. They have been reported to possess a diverse range of bioactivities, including antimicrobial, antifungal and cytotoxic properties. In this review, we discuss the isolation, structure elucidation and any reported bioactivities of this compound class, including establishment of stereochemistry and any total syntheses of these natural products. A total of 180 protoilludane natural products, isolated in the last 70 years, from fungi, plant and marine sources are covered, highlighting their structural diversity and potential in drug discovery.
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Affiliation(s)
- Melissa M. Cadelis
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand;
- Bioluminescent Superbugs Lab, School of Medical Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1023, New Zealand;
| | - Brent R. Copp
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand;
| | - Siouxsie Wiles
- Bioluminescent Superbugs Lab, School of Medical Sciences, University of Auckland, 85 Park Road, Grafton, Auckland 1023, New Zealand;
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26
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Chen Y, Liu H, Zou G, Yang W, Zhang L, Yan Z, Long Y, She Z. Bioactive sesquiterpene derivatives from mangrove endophytic fungus Phomopsis sp. SYSU-QYP-23: Structures and nitric oxide inhibitory activities. Bioorg Chem 2020; 107:104530. [PMID: 33323272 DOI: 10.1016/j.bioorg.2020.104530] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/30/2020] [Accepted: 11/30/2020] [Indexed: 11/17/2022]
Abstract
Eight new sesquiterpene derivatives (2, 4-6 and 10-13), along with five known analogues were isolated from the mangrove endophytic fungus Phomopsis sp. SYSU-QYP-23. Their structures of new compounds were established by spectroscopic methods, and the absolute configurations were confirmed by single-crystal X-ray diffraction analysis and comparison of the experimental ECD spectra. The absolute configuration of the side chain in 1 was first defined by modified Mosher's method. Compounds 1-7 showed potent inhibitory activities against nitric oxide (NO) production in lipopolysaccharides (LPS) induced RAW 264.7 cells with IC50 values ranging from 8.6 to 14.5 μM. The molecular docking results implied that the bioactive sesquiterpenes may directly bind with targeting residues in the active cavity of iNOS protein.
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Affiliation(s)
- Yan Chen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China; National R & D Center for Edible Fungus Processing Technology, Henan University, Kaifeng 475004, China
| | - Hongju Liu
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, PR China
| | - Ge Zou
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Wencong Yang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Lishan Zhang
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, PR China
| | - Zhangyuan Yan
- School of Chemistry, South China Normal University, Guangzhou 510006, PR China
| | - Yuhua Long
- School of Chemistry, South China Normal University, Guangzhou 510006, PR China.
| | - Zhigang She
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China.
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27
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Gaston R, Geldenhuys WJ, Dudley GB. Synthesis of Illudinine from Dimedone and Identification of Activity as a Monoamine Oxidase Inhibitor. J Org Chem 2020; 85:13429-13437. [PMID: 32830978 DOI: 10.1021/acs.joc.0c01301] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The fungal metabolite illudinine is prepared in seven steps and ca. 55% overall yield from dimedone using an "open and shut" (ring-opening and ring-closing) strategy. Tandem ring-opening fragmentation and olefination of dimedone establishes alkyne and vinylarene functionality linked by a neopentylene tether. Oxidative cycloisomerization then provides the illudinine framework. The key innovation in this second-generation synthesis of illudinine is the use of the nitrile functional group, rather than an ester, as the functional precursor to the carboxylic acid of illudinine. The small, linear nitrile (C≡N) is associated with improved selectivity, π-conjugation, and reactivity at multiple points in the synthetic sequence relative to the carboxylic acid ester. Preliminary assays indicate that illudinine and several related synthetic analogues are monoamine oxidase inhibitors, which is the first reported indication of biological activity associated with this natural product. Illudinine was found to inhibit monoamine oxidase B (MAO-B) with an IC50 of 18 ± 7.1 μM in preliminary assays.
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28
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Liu H, Liu Z, Li H, Tan H, Zhang Q, Li D, Liu H, Zhang W. Lithocaldehydes A and B, polyketones from the deep sea-derived fungus Phomopsis lithocarpus FS508. Org Biomol Chem 2020; 18:7326-7329. [PMID: 32940323 DOI: 10.1039/d0ob01674h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lithocaldehydes A (1) and B (2), a pair of novel diastereoisomers possessing an unprecedented 6/6/5/5/6 highly-fused ring system forming an earring-like skeleton, were isolated from the deep sea-derived fungus Phomopsis lithocarpus FS508. The structures of 1 and 2 were fully characterized and established through extensive spectroscopic interpretations and ECD calculations. Moreover, compounds 1 and 2 were shown to be promising antibiotics, exhibiting potent antifungal activities that are comparable to those of the positive control nystatin.
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Affiliation(s)
- Huibo Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China. and School of Chemical and Environmental Engineering, Wuyi University, Jiangmen 529020, China
| | - Zhaoming Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Haohua Li
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Haibo Tan
- Program for Natural Products Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Qingbo Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Resource Exploitation and Protection Collaborative Innovation Center (SCS-REPIC), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Dongli Li
- School of Chemical and Environmental Engineering, Wuyi University, Jiangmen 529020, China
| | - Hongxin Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
| | - Weimin Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou 510070, China.
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29
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Zhao Y, Cui J, Liu M, Zhao L. Progress on Terpenoids With Biological Activities Produced by Plant Endophytic Fungi in China Between 2017 and 2019. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20937204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Plant endophytic fungi are an important part of plant microecosystems and a natural resource for human survival and development. Various bioactive natural products produced by plant endophytic fungi show promising prospects in biopharmacy, agricultural production, and industrial fermentation. Terpenoids, the most numerous and structurally diverse natural products from endophytic fungi, possess a broad range of biological activities and huge potential for drug development. It is critically significant for ecological and economic benefits to develop their activities. This paper utilized literature analysis to summarize 200 terpenoids with biological activities that are derived from plant endophytic fungi in China between 2017 and 2019. Among them, sesquiterpenoids were the most important kind of terpenoids, and Trichoderma and Aspergillus species were main terpenoid-producing plant endophytic fungi. Furthermore, these terpenoids displayed multifarious biological activities, including antimicrobial, antipathogenic, and anti-inflammatory activities, as well as cytotoxicity, antitumor agents, and enzyme inhibition.
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Affiliation(s)
- Yu Zhao
- School of Pharmaceutical Sciences, Shandong University, Jinan, P.R. China
| | - Jing Cui
- Department of Pharmacy, Qilu Hospital of Shandong University, Jinan, P.R. China
| | - Mengyujie Liu
- Department of Pharmacy, Qilu Hospital of Shandong University, Jinan, P.R. China
| | - Lei Zhao
- Department of Pharmacy, Qilu Hospital of Shandong University, Jinan, P.R. China
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30
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A New Chromene Derivative from Alternaria sp. ZG22. Chem Nat Compd 2020. [DOI: 10.1007/s10600-020-03049-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Biological Activity of Endophytic Fungi from the Roots of the Medicinal Plant Vernonia anthelmintica. Microorganisms 2020; 8:microorganisms8040586. [PMID: 32316675 PMCID: PMC7232482 DOI: 10.3390/microorganisms8040586] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/31/2020] [Accepted: 04/03/2020] [Indexed: 12/18/2022] Open
Abstract
Endophytic fungi were first isolated from the fresh root of the Chinese medicinal plant Vernonia anthelmintica collected from the Hotan Prefecture within the Xinjiang Autonomous region of the People’s Republic of China. This plant has been used in Uyghur traditional medicine to treat vitiligo, a skin condition characterized by patches of the skin losing their pigment. In total, fifteen fungal strains were isolated. Among these, four endophytic fungi were identified by their DNA sequences and registered to GenBank with accession numbers. The isolates were identified as Schizophyllum commune XJA1, Talaromyces sp. XJA4, Aspergillus sp. XJA6, Aspergillus terreus XJA8. Ethyl acetate extracts of all fungal strains were used to quantify melanin content and to identify in vitro biological activity assays including antimicrobial, antioxidant, cytotoxic, antidiabetic and tyrosinase activity on B16 cells. Among the extracts of all four identified strains, the ethyl acetate extract of the Aspergillus sp. XJA6 was chosen for further characterization because it presented the highest biological activity against these tests. In addition, twenty four volatile compounds from the petroleum ether fraction were characterized by GC–MS.
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32
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Ma KL, Wei WJ, Li HY, Wang LD, Dong SH, Gao K. Phomotide A, a novel polyketide, from the endophytic fungus Phomopsis sp. CFS42. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Abstract
Reports on β-secretase inhibitors of natural origin are listed in order to reveal their chemical diversity. Various types of compounds were found to inhibit β-secretase, and natural resources included a wide spectrum of biological species. Among them, some triterpenes and moracin derivatives, which are nonpeptidic compounds, were determined to be competitive inhibitors. In addition, no peptide compounds were reported from natural resources. These points will be clarified in future studies.
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Affiliation(s)
- Kazuya Murata
- Faculty of Pharmacy, Kindai University, Osaka, Japan
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34
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Song XM, Zhou XM, Li YL, Huang LB, Chen CC, Gao Y, He L, Mao XQ, Chen B, Liu JW, Liu HJ, Song XP, Han CR. Two new cephalochromin derivative from the Alternaria sp. ZG22. Nat Prod Res 2019; 35:3370-3375. [PMID: 31841031 DOI: 10.1080/14786419.2019.1700248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Two new cephalochromin derivatives, prenylcephalochromin A (1), prenylcephalochromin B (2), along with cephalochromin (3) were isolated from the Alternaria sp. ZG22 obtained from a Dasymaschalon rostratum collected from the Hainan. The structures of two new compounds were elucidated by comprehensive spectroscopic methods. Compounds 1-3 showed α-glucosidase inhibitory activity.
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Affiliation(s)
- Xin-Ming Song
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Xue-Ming Zhou
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Ya-Ling Li
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Li-Bing Huang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Cai-Cui Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Yan Gao
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Lin He
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Xiao-Qun Mao
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Bing Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Jing-Wen Liu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Hui-Jie Liu
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Xiao-Ping Song
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, P. R. China
| | - Chang-Ri Han
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou, P. R. China.,Key Laboratory of Medicinal and Edible Plants Resources of Hainan Province, School of Chemical and Material Engineering, Hainan Vocational University of Science and Technology, Haikou, P. R. China
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35
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Rhizophins A and B, new sesquiterpenes from the culture broth of Coprinus rhizophorus. J Antibiot (Tokyo) 2019; 73:175-178. [PMID: 31811251 DOI: 10.1038/s41429-019-0263-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/23/2019] [Accepted: 11/28/2019] [Indexed: 12/13/2022]
Abstract
Two new sesquiterpenes (1 and 2) together with one known compound (3) were isolated from the culture broth of Coprinus rhizophorus. Chemical structures of these compounds were deduced by spectroscopic methods. Compound 1 exhibited free-radical-scavenging activity against the 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical. Compounds 2 and 3 exhibited antimicrobial activities against Saccharomyces cerevisiae, Propionibacterium acnes, and Staphylococcus epidermidis.
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36
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37
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Xun MM, Bai Y, Wang Y, Hu Z, Fu K, Ma W, Yuan C. Synthesis of Four Illudalane Sesquiterpenes Utilizing a One-Pot Diels-Alder/Oxidative Aromatization Sequence. Org Lett 2019; 21:6879-6883. [PMID: 31441309 DOI: 10.1021/acs.orglett.9b02511] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The concise, divergent total syntheses of four illudalane sesquiterpenes using an indanone as the key intermediate are reported. The key elements in these total syntheses, which involve only four to six operational steps, consist of a Suzuki cross-coupling and a one-pot Diels-Alder/oxidative aromatization reaction.
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Affiliation(s)
- Miao-Miao Xun
- National Demonstration Center for Experimental Chemical Engineering Comprehensive Education, School of Chemical Engineering and Technology, North University of China, Taiyuan 030000, P.R. China
| | - Yunli Bai
- National Demonstration Center for Experimental Chemical Engineering Comprehensive Education, School of Chemical Engineering and Technology, North University of China, Taiyuan 030000, P.R. China
| | - Yanhong Wang
- National Demonstration Center for Experimental Chemical Engineering Comprehensive Education, School of Chemical Engineering and Technology, North University of China, Taiyuan 030000, P.R. China
| | - Zhiyong Hu
- National Demonstration Center for Experimental Chemical Engineering Comprehensive Education, School of Chemical Engineering and Technology, North University of China, Taiyuan 030000, P.R. China
| | - Kai Fu
- National Demonstration Center for Experimental Chemical Engineering Comprehensive Education, School of Chemical Engineering and Technology, North University of China, Taiyuan 030000, P.R. China
| | - Wenbing Ma
- National Demonstration Center for Experimental Chemical Engineering Comprehensive Education, School of Chemical Engineering and Technology, North University of China, Taiyuan 030000, P.R. China
| | - Changchun Yuan
- National Demonstration Center for Experimental Chemical Engineering Comprehensive Education, School of Chemical Engineering and Technology, North University of China, Taiyuan 030000, P.R. China
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38
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Shimoda K, Yamaoka Y, Yoo D, Yamada KI, Takikawa H, Takasu K. Total Syntheses of Allelopathic 4-Oxyprotoilludanes, Melleolides, and Echinocidins. J Org Chem 2019; 84:11014-11024. [PMID: 31403293 DOI: 10.1021/acs.joc.9b01589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Stereocontrolled total syntheses of allelopathic 4-oxyprotoilludane sesquiterpenes, melleolide, melleolide F, and echinocidins B and D were achieved. The curved 5/6/4 tricyclic system with an angular hydroxy group was built via three key transformations: (1) Me3Al-catalyzed [2 + 2] cycloaddition of a ketene silyl acetal with a propiolate, (2) reductive ring-opening of a cyclic hemiketal, and (3) the intramolecular Morita-Baylis-Hillman reaction. This synthetic route represents a new and reliable strategy to obtain protoilludanes with several oxy-functional groups.
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Affiliation(s)
- Kazuma Shimoda
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Yousuke Yamaoka
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Dongeun Yoo
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Ken-Ichi Yamada
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Hiroshi Takikawa
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
| | - Kiyosei Takasu
- Graduate School of Pharmaceutical Sciences , Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501 , Japan
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39
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Xu J, Liu Z, Chen Y, Tan H, Li H, Li S, Guo H, Huang Z, Gao X, Liu H, Zhang W. Lithocarols A-F, six tenellone derivatives from the deep-sea derived fungus Phomopsis lithocarpus FS508. Bioorg Chem 2019; 87:728-735. [DOI: 10.1016/j.bioorg.2019.03.078] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/28/2019] [Accepted: 03/30/2019] [Indexed: 12/15/2022]
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40
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Zeng Z, Zhao Y, Zhang Y. Divergent total syntheses of five illudalane sesquiterpenes and assignment of the absolute configuration. Chem Commun (Camb) 2019; 55:4250-4253. [PMID: 30901009 DOI: 10.1039/c9cc00933g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Concise, divergent total syntheses of five bioactive illudalane sesquiterpenes have been achieved. Our synthesis features an intermolecular [2+2+2] cycloaddition, and a lactone-directed aromatic C-H oxygenation to generate a temporary phenolic hydroxyl group which enables regioselective methylation. Furthermore, the absolute configuration of radulactone was assigned by chemical synthesis.
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Affiliation(s)
- Zhixiong Zeng
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province, iChEM, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China.
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41
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Xu J, Tan H, Chen Y, Li S, Guo H, Huang Z, Li H, Gao X, Liu H, Zhang W. Lithocarpinols A and B, a pair of diastereomeric antineoplastic tenellone derivatives from the deep-sea derived fungus Phomopsis lithocarpus FS508. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.09.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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42
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Hu HB, Luo YF, Wang P, Wang WJ, Wu J. Xanthone-derived polyketides from the Thai mangrove endophytic fungus Phomopsis sp. xy21. Fitoterapia 2018; 131:265-271. [PMID: 30414876 DOI: 10.1016/j.fitote.2018.11.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 11/06/2018] [Accepted: 11/07/2018] [Indexed: 12/20/2022]
Abstract
Six new xanthone-derived polyketides, named phomoxanthones F-K (1-6), along with three known ones, were isolated from Phomopsis sp. xy21, which was isolated as an endophytic fungus from the Thai mangrove Xylocarpus granatum. Phomoxanthone F (1) represents the first xanthone-derived polyketide containing a 10a-decarboxylated benzopyranone nucleus that was substituted by a 4-methyldihydrofuran-2(3H)-one moiety at C10a. Phomoxanthones G (2) and H (3) are highly oxidized xanthone-derived polyketides containing a novel 5-methyl-6-oxabicyclo[3.2.1]octane motif. This is the first report of a C6-O-C12 bridge in xanthone-derived polyketides. Additionally, a plausible biogenetic pathway for these xanthone-derived polyketides is proposed.
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Affiliation(s)
- Han-Bo Hu
- Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Yan-Fang Luo
- Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Pan Wang
- Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China
| | - Wen-Jing Wang
- Marine Drugs Research Center, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
| | - Jun Wu
- School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China.
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43
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Qiao Y, Tu K, Feng W, Liu J, Xu Q, Tao L, Zhu H, Chen C, Wang J, Xue Y, Zhang Y. Polyketide and Prenylxanthone Derivatives from the Endophytic Fungus Aspergillus sp. TJ23. Chem Biodivers 2018; 15:e1800395. [PMID: 30294975 DOI: 10.1002/cbdv.201800395] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 10/01/2018] [Indexed: 01/19/2023]
Abstract
Eight secondary metabolites, including a new polyketide, named asperetide (1) and a new prenylxanthone derivative, called asperanthone (4), and six known compounds, (S)-3-butyl-7-methoxyphthalide (2), ruguloxanthone C (3), tajixanthone hydrate (5), tajixanthone methanoate (6), salimyxin B (7), and ergosterol (8), were isolated and identified from the medicinal plant-derived fungus, Aspergillus sp. TJ23. The new structures and their absolute configurations were elucidated via multiple methods, including 1D- and 2D-NMR, HR-ESI-MS, UV, IR, and the electronic circular dichroism (ECD) calculations. All of the isolates were characterized from the strain for the first time. The in vitro bioassay showed that compounds 3-5 and 8 exerted inhibitory activities against five cancer cell lines (B16, MDA-MB-231, 4T1, HepG2, and LLC) with IC50 values ranging from 5.13 to 36.8 μm.
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Affiliation(s)
- Yuben Qiao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Kun Tu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Wenya Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Qianqian Xu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Li Tao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Yongbo Xue
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
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44
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Highly Substituted Benzophenone Aldehydes and Eremophilane Derivatives from the Deep-Sea Derived Fungus Phomopsis lithocarpus FS508. Mar Drugs 2018; 16:md16090329. [PMID: 30208615 PMCID: PMC6165036 DOI: 10.3390/md16090329] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/05/2018] [Accepted: 09/07/2018] [Indexed: 12/19/2022] Open
Abstract
Five new benzophenone derivatives named tenellones D–H (1–5), sharing a rare naturally occurring aldehyde functionality in this family, and a new eremophilane derivative named lithocarin A (7), together with two known compounds (6 and 8), were isolated from the deep marine sediment-derived fungus Phomopsis lithocarpus FS508. All of the structures for these new compounds were fully characterized and established on the basis of extensive spectroscopic interpretation and X-ray crystallographic analysis. Compound 5 exhibited cytotoxic activity against HepG-2 and A549 cell lines with IC50 values of 16.0 and 17.6 μM, respectively.
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