1
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Aizawa M, Saito H, Mitazaki T, Taketani T, Noguchi K, Miyazaki S, Kawaide H, Natsume M. Production of desmethyl-gregatin A, a possible causative toxin of brown stem rot in adzuki bean, by Phialophora gregata f. sp. adzukicola. JOURNAL OF PESTICIDE SCIENCE 2023; 48:47-53. [PMID: 37361487 PMCID: PMC10288003 DOI: 10.1584/jpestics.d22-070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/09/2023] [Indexed: 06/28/2023]
Abstract
To elucidate the cause of brown stem rot in the adzuki bean, we re-evaluated the phytotoxins produced in cultures of the causative agent, Phialophora gregata f. sp. adzukicola. The ethyl acetate-soluble acidic fraction of the culture, as well as the neutral fraction, inhibited the growth of alfalfa seedlings. In the neutral fraction, known phytotoxins gregatin A, B, and C or D and penicilliol A were present. Although the phytotoxins in the acidic fraction were unstable, liquid chromatography-mass spectrometry analysis of the partially purified material suggested that one phytotoxin present was the non-methylated gregatin desmethyl-gregatin A (gregatinic acid A).
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Affiliation(s)
- Moe Aizawa
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology
| | - Hayate Saito
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology
| | - Takuya Mitazaki
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology
| | - Takara Taketani
- Graduate School of Agriculture, Tokyo University of Agriculture and Technology
| | - Keiichi Noguchi
- Instrumentation Analysis Center, Research Center for Science and Technology, Tokyo University of Agriculture and Technology
| | - Sho Miyazaki
- Institute of Global Innovation Research, Tokyo University of Agriculture and Technology
| | - Hiroshi Kawaide
- Division of Bioregulation and Biointeraction, Institute of Agriculture, Tokyo University of Agriculture and Technology
| | - Masahiro Natsume
- Division of Bioregulation and Biointeraction, Institute of Agriculture, Tokyo University of Agriculture and Technology
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2
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Gillsch F, Mbui F, Bilitewski U, Schobert R. Syntheses and Antibacterial Evaluation of New Penicillium Metabolites Gregatins G and Thiocarboxylics C. Chem Biodivers 2023; 20:e202300181. [PMID: 36891992 DOI: 10.1002/cbdv.202300181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/08/2023] [Accepted: 03/08/2023] [Indexed: 03/10/2023]
Abstract
Two pairs of side-chain epimeric 3-methoxycarbonyl-dihydrofuran-4-ones with structures purported for thiocarboxylics C1/2 and gregatins G1/2 , isolated from Penicillium sp. Sb62, were synthesised for the first time in five steps and 17-25 % yield. Key steps were a Suzuki cross-coupling, a Yamaguchi esterification, and a base-induced Knoevenagel-type condensation. The optimum protecting group for the 10-OH group in the dienyl side-chain, orthogonal to necessary protecting groups on O-10 of the furanone, was found to be t-butyldiphenylsilyl (TBDPS). The specific rotations of our synthetic products deviated markedly from those reported for the natural isolates. In contrast to the isolates, the synthetic products were not active against Escherichia coli and Staphylococcus aureus bacteria.
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Affiliation(s)
- Franziska Gillsch
- Organic Chemistry Laboratory, University Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
| | - Fredrick Mbui
- Department of Compound Profiling and Screening, Helmholtz Center for Infection Research GmbH, Inhoffenstrasse 7, 38124, Braunschweig, Germany
- Department of Biochemistry and Biotechnology, Technical University of Kenya, P.O. Box 52428 -, 00200, Nairob, Kenya
| | - Ursula Bilitewski
- Department of Compound Profiling and Screening, Helmholtz Center for Infection Research GmbH, Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany
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3
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Gillsch F, Mbui F, Bilitewski U, Schobert R. Synthesis and Bioactivity of Thiocarboxylic A and Derivatives. JOURNAL OF NATURAL PRODUCTS 2022; 85:2828-2835. [PMID: 36416745 DOI: 10.1021/acs.jnatprod.2c00870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The Penicillium metabolite thiocarboxylic A (1a) and three close analogues were synthesized in 14 steps. The stereogenic elements were installed via stereoselective Sharpless epoxidation, (E)-selective reduction of a dibromide, and a Suzuki cross coupling. Thiocarboxylic A (1a) was obtained in 6% overall yield. The synthetic product and the natural isolate differed markedly in their specific rotations and antibiotic activities against Escherichia coli and Staphylococcus aureus. This modular synthetic route should be flexible enough to allow the synthesis of other natural and non-natural 3-methoxycarbonyldihydrofuran-4-ones for biological studies.
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Affiliation(s)
- Franziska Gillsch
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
| | - Fredrick Mbui
- Department of Compound Profiling and Screening, Helmholtz Centre for Infection Research GmbH, Inhoffenstrasse 7, 38124 Braunschweig, Germany
- Department of Biochemistry and Biotechnology, Technical University of Kenya, P.O. Box 52428, 00200 Nairobi, Kenya
| | - Ursula Bilitewski
- Department of Compound Profiling and Screening, Helmholtz Centre for Infection Research GmbH, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstrasse 30, 95440 Bayreuth, Germany
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4
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Bassetti B, Ballini R, Petrini M, Palmieri A. Diastereoselective Conversion of β‐Nitro‐β,γ‐Unsaturated Ketones into Conjugated (
E
,
E
)‐Dienones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202201151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Benedetta Bassetti
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Roberto Ballini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Marino Petrini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Alessandro Palmieri
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
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5
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Beenker WAG, Hoeksma J, den Hertog J. Gregatins, a Group of Related Fungal Secondary Metabolites, Inhibit Aspects of Quorum Sensing in Gram-Negative Bacteria. Front Microbiol 2022; 13:934235. [PMID: 35865924 PMCID: PMC9296082 DOI: 10.3389/fmicb.2022.934235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 06/02/2022] [Indexed: 12/11/2022] Open
Abstract
Quorum sensing (QS) is a process that regulates gene expression based on cell density. In bacteria, QS facilitates collaboration and controls a large number of pathways, including biofilm formation and virulence factor production, which lead to lower sensitivity to antibiotics and higher toxicity in the host, respectively. Inhibition of QS is a promising strategy to combat bacterial infections. In this study, we tested the potential of secondary metabolites from fungi to inhibit bacterial QS using a library derived from more than ten thousand different fungal strains. We used the reporter bacterium, Chromobacterium violaceum, and identified 39 fungal strains that produced QS inhibitor activity. These strains expressed two QS inhibitors that had been described before and eight QS inhibitors that had not been described before. Further testing for QS inhibitor activity against the opportunistic pathogen Pseudomonas aeruginosa led to the identification of gregatins as an interesting family of compounds with QS inhibitor activity. Although various gregatins inhibited QS in P. aeruginosa, these gregatins did not inhibit virulence factor production and biofilm formation. We conclude that gregatins inhibit some, but not all aspects of QS.
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Affiliation(s)
- Wouter A. G. Beenker
- Hubrecht Institute-KNAW and University Medical Center Utrecht, Utrecht, Netherlands
| | - Jelmer Hoeksma
- Hubrecht Institute-KNAW and University Medical Center Utrecht, Utrecht, Netherlands
| | - Jeroen den Hertog
- Hubrecht Institute-KNAW and University Medical Center Utrecht, Utrecht, Netherlands
- Institute Biology Leiden, Leiden University, Leiden, Netherlands
- *Correspondence: Jeroen den Hertog
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6
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Gillsch F, Zeng H, Bär SI, Schrey H, Schobert R. Synthesis and Bioactivity of Ophiofuranones A and B. J Org Chem 2022; 87:6520-6523. [PMID: 35471021 DOI: 10.1021/acs.joc.2c00521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ophiofuranones A and B, metabolites of the fungus Ophiosphaerella korrae, were synthesized in 16 steps and 12%/22% yield. The stereogenic centers were established by Sharpless dihydroxylations and epoxidation, the 1,3-dienes via Wittig or HWE olefinations. The rings were closed through Knoevenagel-type condensation and lactonization. The ophiofuranones proved nontoxic at relevant concentrations against tumor cells, fibroblasts, and various bacteria and fungi. Ophiofuranone A and the monocyclic precursors 4 were weakly active against microbial biofilms.
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Affiliation(s)
- Franziska Gillsch
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstraße 30, 95440 Bayreuth, Germany
| | - Haoxuan Zeng
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Sofia I Bär
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstraße 30, 95440 Bayreuth, Germany
| | - Hedda Schrey
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Rainer Schobert
- Organic Chemistry Laboratory, University Bayreuth, Universitaetsstraße 30, 95440 Bayreuth, Germany
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7
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Qiao Y, Tan X, Xu Q, Zhang Z, Xu Q, Tao L, Liu J, Zhu H, Chen C, Ye Y, Lu Y, Chen G, Qi C, Zhang Y. Asperosin A, a [4 + 2] Diels–Alder cycloaddition polyketide dimer from Aspergillus rugulosa with immunosuppressive activity. Org Chem Front 2022. [DOI: 10.1039/d1qo01767e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A novel homologous polyketide dimer, asperosin A (1), constructed with a unique hetero-bicycle 6/5 core skeleton featuring four continuous quaternary carbons, was isolated from a solid culture of the fungus Aspergillus rugulosa.
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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, People's Republic of China
| | - Xiaosheng Tan
- Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, 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, People's Republic of China
| | - Zijun 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
| | - Qiaoxin 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, People's Republic of China
| | - Li Tao
- Ezhou Central Hospital, Ezhou 436000, People's Republic of 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, 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
| | - 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, People's Republic of China
| | - Ying Ye
- 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
| | - Yuanyuan Lu
- Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, People's Republic of China
| | - Gang Chen
- Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, 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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8
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Xu Q, Qiao Y, Zhang Z, Deng Y, Chen T, Tao L, Xu Q, Liu J, Sun W, Ye Y, Lu Y, Qi C, Zhang Y. New Polyketides With Anti-Inflammatory Activity From the Fungus Aspergillus rugulosa. Front Pharmacol 2021; 12:700573. [PMID: 34234683 PMCID: PMC8256160 DOI: 10.3389/fphar.2021.700573] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 05/26/2021] [Indexed: 12/22/2022] Open
Abstract
Two new polyketide compounds, asperulosins A and B (1–2), and one new prenylated small molecule, asperulosin C (3), along with nine known compounds (4–12), were isolated and identified from a fungus Aspergillus rugulosa. Their structures were extensively elucidated via HRESIMS, 1D, and 2D NMR analysis. The absolute configurations of the new compounds were determined by the comparison of their electronic circular dichroism (ECD), calculated ECD spectra, and the detailed discussion with those in previous reports. Structurally, compounds 1 and 2 belonged to the polyketide family and were from different origins. Compound 2 was constructed by five continuous quaternary carbon atoms, which occur rarely in natural products. All of the isolates were evaluated for anti-inflammatory activity against the production of nitric oxide (NO) in lipopolysaccharide (LPS)-induced RAW264.7 cells. Among those, compounds 1 and 5 showed a significant inhibitory effect on NO production with IC50 values of 1.49 ± 0.31 and 3.41 ± 0.85 μM, respectively. Additionally, compounds 1 and 5 markedly increased the secretion of anti-inflammatory cytokine IL10 while suppressing the secretion of pro-inflammatory cytokines IL6, TNF-α, IFN-γ, MCP-1, and IL12. Besides, 1 and 5 inhibited the transcription level of pro-inflammatory macrophage markers IL6, IL1β, and TNF-α while remarkably elevating the anti-inflammatory factor IL10 and M2 macrophage markers ARG1 and CD206. Moreover, 1 and 5 restrained the expression and nuclear translocation of NF-κB, as well as its downstream signaling proteins COX-2 and iNOS. All these results suggest that 1 and 5 have potential as anti-inflammatory agents, with better or comparable activities than those of the positive control, dexamethasone.
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Affiliation(s)
- 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, 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, China
| | - Zijun Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanfang Deng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tianqi Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li Tao
- Ezhou Central Hospital, Ezhou, China
| | - Qiaoxin Xu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 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, China
| | - Weiguang Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Ye
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuanyuan Lu
- Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 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, 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, China
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9
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Chang JL, Xu HZ, Zhou J, Zhou M, Zhang X, Guo Y, Ruan HL. Antimicrobial Furancarboxylic Acids from a Penicillium sp. JOURNAL OF NATURAL PRODUCTS 2020; 83:3606-3613. [PMID: 33314934 DOI: 10.1021/acs.jnatprod.0c00758] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Ten novel (1, 2, 3a, 3b, 4a, 4b, 5a, 5b, 6a, and 6b) furancarboxylic acids including four pairs of epimers (3a, 3b; 4a, 4b; 5a, 5b; 6a, 6b), together with seven known analogues (7a, 7b, 8a, 8b, 9a, 9b, and 10), were isolated from the fermentation of the soil-derived fungus Penicillium sp. sb62. Their structures were established on the basis of spectroscopic data analysis, and the absolute configurations were determined by time-dependent density functional theory electronic circular dichroism calculations, comparison of the specific optical rotation values, and modified Mosher's method. Compounds 1-4 represent the first class of natural furancarboxylic acids featuring a thiophene moiety. Compounds 1-7 showed antimicrobial inhibitory activities against Escherichia coli, Staphylococcus aureus, and Candida albicans with MIC values ranging from 0.9 to 7.0 μg/mL, from 1.7 to 3.5 μg/mL, and from 3.3 to 7.0 μg/mL, respectively.
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Affiliation(s)
- Jin-Ling Chang
- 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
| | - Hong-Zhe 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, People's Republic of China
| | - Jia Zhou
- 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
| | - Ming Zhou
- 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
| | - Xuke Zhang
- 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
| | - 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
| | - Han-Li Ruan
- 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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10
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Wang WG, Wang H, Du LQ, Li M, Chen L, Yu J, Cheng GG, Zhan MT, Hu QF, Zhang L, Yao M, Matsuda Y. Molecular Basis for the Biosynthesis of an Unusual Chain-Fused Polyketide, Gregatin A. J Am Chem Soc 2020; 142:8464-8472. [PMID: 32275405 DOI: 10.1021/jacs.0c02337] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Gregatin A (1) is a fungal polyketide featuring an alkylated furanone core, but the biosynthetic mechanism to furnish the intriguing molecular skeleton has yet to be elucidated. Herein, we have identified the biosynthetic gene cluster of gregatin A (1) in Penicillium sp. sh18 and investigated the mechanism that produces the intriguing structure of 1 by in vivo and in vitro reconstitution of its biosynthesis. Our study established the biosynthetic route leading to 1 and illuminated that 1 is generated by the fusion of two different polyketide chains, which are, amazingly, synthesized by a single polyketide synthase GrgA with the aid of a trans-acting enoylreductase GrgB. Chain fusion, as well as chain hydrolysis, is catalyzed by an α/β hydrolase, GrgF, hybridizing the C11 and C4 carbon chains by Claisen condensation. Finally, structural analysis and mutational experiments using GrgF provided insight into how the enzyme facilitates the unusual chain-fusing reaction. In unraveling a new biosynthetic strategy involving a bifunctional PKS and a polyketide fusing enzyme, our study expands our knowledge concerning fungal polyketide biosynthesis.
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Affiliation(s)
- Wei-Guang Wang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, China
| | - Hang Wang
- Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Lian-Qiong Du
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, China
| | - Min Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, China
| | - Lin Chen
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
| | - Jian Yu
- Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Gui-Guang Cheng
- Yunnan Institute of Food Safety, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
| | - Meng-Tao Zhan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, China
| | - Qiu-Fen Hu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, China
| | - Lihan Zhang
- School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang, China
| | - Min Yao
- Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Yudai Matsuda
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China
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11
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Ito Y, Kusakabe T, Dhage YD, Takahashi K, Sakata K, Sasai H, Kato K. Total Synthesis of (-)-Graminin A Based on Asymmetric Cyclization Carbonylation of Propargyl Acetate. J Org Chem 2019; 84:16268-16277. [PMID: 31789031 DOI: 10.1021/acs.joc.9b02886] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The first total synthesis of (-)-graminin A is described. Key features of our synthetic approach involve a palladium-catalyzed asymmetric cyclization carbonylation of prochiral propargylic acetate, conversion of the orthoester product into methyl 4-oxo-3-furancarboxylate, and copper complex-mediated aldol condensation of (+)-gregatin B bearing a diene moiety. A new synthesis of (+)-gregatin B and the first synthesis of (-)-graminin A were achieved.
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Affiliation(s)
- Yoichi Ito
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1 Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Taichi Kusakabe
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1 Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Yogesh Daulat Dhage
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1 Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Keisuke Takahashi
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1 Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Ken Sakata
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1 Miyama , Funabashi , Chiba 274-8510 , Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR) , Osaka University , Mihogaoka, Ibaraki-shi , Osaka 567-0047 , Japan
| | - Keisuke Kato
- Faculty of Pharmaceutical Sciences , Toho University , 2-2-1 Miyama , Funabashi , Chiba 274-8510 , Japan
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12
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Wu YR, Yin GP, Gao HL, Wang XB, Yang MH, Kong LY. Asperfuranones A-C, 3(2H)-furanone derivatives from the fungus Aspergillus sp. and the configuration reassignment of their eighteen analogues. Fitoterapia 2019; 134:196-200. [PMID: 30825579 DOI: 10.1016/j.fitote.2019.02.024] [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: 12/13/2018] [Revised: 02/25/2019] [Accepted: 02/26/2019] [Indexed: 10/27/2022]
Abstract
Three undescribed 3(2H)-furanone derivatives, asperfuranones A-C (1-3), along with one known compound (4) were isolated from the Aspergillus sp. strain obtained from the intestines of centipede. Their structures were determined by NMR and MS spectroscopic analyses, and the absolute configurations were established by the Snatzke's sector rules, modified Mosher's method and electronic circular dichroism (ECD) calculation. Meanwhile, the application of the sector rules led to the reassignment of the absolute configurations of 4 and other seventeen previously reported analogues (5-21).
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Affiliation(s)
- Ya-Rong Wu
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Guo-Ping Yin
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Hong-Liang Gao
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xiao-Bing Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ming-Hua Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research, State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
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13
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Tang JW, Kong LM, Zu WY, Hu K, Li XN, Yan BC, Wang WG, Sun HD, Li Y, Puno PT. Isopenicins A–C: Two Types of Antitumor Meroterpenoids from the Plant Endophytic Fungus Penicillium sp. sh18. Org Lett 2019; 21:771-775. [PMID: 30640477 DOI: 10.1021/acs.orglett.8b04020] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jian-Wei Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Ling-Mei Kong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
| | - Wen-Yu Zu
- Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, People’s Republic of China
| | - Kun Hu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, 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, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
| | - Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
| | - Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming 650201, Yunnan, People’s Republic of China
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14
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Li YL, Zhu RX, Li G, Wang NN, Liu CY, Zhao ZT, Lou HX. Secondary metabolites from the endolichenic fungus Ophiosphaerella korrae. RSC Adv 2019; 9:4140-4149. [PMID: 35520149 PMCID: PMC9060614 DOI: 10.1039/c8ra10329a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 01/12/2019] [Indexed: 12/28/2022] Open
Abstract
The isolation of the cytotoxic fractions from the endolichenic fungus Ophiosphaerella korrae yielded six new metabolites, including five polyketides (ophiofuranones A (1) and B (2), with unusual furopyran-3,4-dione-fused heterocyclic skeletons, ophiochromanone (3), ophiolactone (4), and ophioisocoumarin (5)), one sesquiterpenoid ophiokorrin (10), and nine known compounds. Their structures were established on the basis of the analysis of HRESIMS and NMR spectroscopic data. ECD calculations, GIAO NMR shift calculations and single-crystal X-ray diffraction were employed for the stereo-structure determination. A plausible biogenetic pathway for the ophiofuranones A (1) and B (2) was proposed. The cytotoxic assay suggested that the five known perylenequinones mainly contributed to the cytoxicity of the extract. Further phytotoxic studies indicated that ophiokorrin inhibited root elongation in the germination of Arabidopsis thaliana with an IC50 value of 18.06 μg mL−1. Six new metabolites were isolated from the endolichenic fungus Ophiosphaerella korrae. Ophiokorrin inhibited root elongation in the germination of Arabidopsis thaliana.![]()
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Affiliation(s)
- Yue-Lan Li
- Department of Natural Product Chemistry
- Key Lab of Chemical Biology (MOE)
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
| | - Rong-Xiu Zhu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Gang Li
- Department of Natural Medicinal Chemistry and Pharmacognosy
- School of Pharmacy
- Qingdao University
- Qingdao 266021
- People's Republic of China
| | - Ning-Ning Wang
- Department of Natural Product Chemistry
- Key Lab of Chemical Biology (MOE)
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
| | - Chun-Yu Liu
- Department of Natural Product Chemistry
- Key Lab of Chemical Biology (MOE)
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
| | - Zun-Tian Zhao
- College of Life Sciences
- Shandong Normal University
- Jinan 250014
- People's Republic of China
| | - Hong-Xiang Lou
- Department of Natural Product Chemistry
- Key Lab of Chemical Biology (MOE)
- School of Pharmaceutical Sciences
- Shandong University
- Jinan 250012
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15
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Inagaki S, Sato A, Sato H, Tamura S, Kawano T. Synthesis of 2-substituted 4,5-dihydro-4-oxo-3-furancarboxylates using acylative intramolecular cyclization of sulfonium salts. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.11.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Vallet M, Vanbellingen QP, Fu T, Le Caer JP, Della-Negra S, Touboul D, Duncan KR, Nay B, Brunelle A, Prado S. An Integrative Approach to Decipher the Chemical Antagonism between the Competing Endophytes Paraconiothyrium variabile and Bacillus subtilis. JOURNAL OF NATURAL PRODUCTS 2017; 80:2863-2873. [PMID: 29139291 DOI: 10.1021/acs.jnatprod.6b01185] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An integrative approach combining traditional natural products chemistry, molecular networking, and mass spectrometry imaging has been undertaken to decipher the molecular dialogue between the fungus Paraconiothyrium variabile and the bacterium Bacillus subtilis, which were isolated as endophytes from the conifer Cephalotaxus harringtonia and are characterized by a strong and mutual antibiosis. From this study, we highlight that bacterial surfactins and a fungal tetronic acid are involved in such competition and that the fungus is able to hydrolyze surfactins to fight against the bacterial partner.
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Affiliation(s)
- Marine Vallet
- Unité Molécules de Communication et Adaptation des Micro-organismes (UMR 7245), Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS , CP 54, 57 rue Cuvier, 75005 Paris, France
| | - Quentin P Vanbellingen
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay , Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Tingting Fu
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay , Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Jean-Pierre Le Caer
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay , Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Serge Della-Negra
- Institut de Physique Nucléaire, UMR8608, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay , 91406, Orsay, France
| | - David Touboul
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay , Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Katherine R Duncan
- Strathclyde Institute of Pharmacy and Biomedical Sciences, HW608, University of Strathclyde , 161 Cathedral Street, Glasgow G4 ORE, U.K
| | - Bastien Nay
- Unité Molécules de Communication et Adaptation des Micro-organismes (UMR 7245), Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS , CP 54, 57 rue Cuvier, 75005 Paris, France
| | - Alain Brunelle
- Institut de Chimie des Substances Naturelles, CNRS UPR2301, Université Paris-Sud, Université Paris-Saclay , Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
| | - Soizic Prado
- Unité Molécules de Communication et Adaptation des Micro-organismes (UMR 7245), Sorbonne Université, Muséum National d'Histoire Naturelle, CNRS , CP 54, 57 rue Cuvier, 75005 Paris, France
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17
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Teponno RB, Noumeur SR, Helaly SE, Hüttel S, Harzallah D, Stadler M. Furanones and Anthranilic Acid Derivatives from the Endophytic Fungus Dendrothyrium variisporum. Molecules 2017; 22:molecules22101674. [PMID: 28991218 PMCID: PMC6151570 DOI: 10.3390/molecules22101674] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/05/2017] [Accepted: 10/06/2017] [Indexed: 11/16/2022] Open
Abstract
Extracts from an endophytic fungus isolated from the roots of the Algerian plant Globularia alypum showed prominent antimicrobial activity in a screening for novel antibiotics. The producer organism was identified as Dendrothyrium variisporum by means of morphological studies and molecular phylogenetic methods. Studies on the secondary metabolite production of this strain in various culture media revealed that the major components from shake flasks were massarilactones D (1) and H (2) as well as two new furanone derivatives for which we propose the trivial names (5S)-cis-gregatin B (3) and graminin D (4). Scale-up of the fermentation in a 10 L bioreactor yielded massarilactone D and several further metabolites. Among those were three new anthranilic acid derivatives (5-7), two known anthranilic acid analogues (8 and 9) and three cyclopeptides (10-12). Their structures were elucidated on the basis of extensive spectroscopic analysis (1D- and 2D-NMR), high-resolution mass spectrometry (HRESIMS), and the application of the modified Mosher's method. The isolated metabolites were tested for antimicrobial and cytotoxic activities against various bacteria, fungi, and two mammalian cell lines. The new Metabolite 5 and Compound 9 exhibited antimicrobial activity while Compound 9 showed cytotoxicity activity against KB3.1 cells.
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Affiliation(s)
- Rémy B Teponno
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), partner site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany.
- Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon.
| | - Sara R Noumeur
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), partner site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany.
- Laboratory of Applied Microbiology, Department of Microbiology, Faculty of Natural and Life Sciences, University Sétif 1 Ferhat Abbas, 19000 Sétif, Algeria.
- Department of Microbiology-Biochemistry, Faculty of Natural and Life Sciences, University of Batna 2, 05000 Batna, Algeria.
| | - Soleiman E Helaly
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), partner site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany.
- Department of Chemistry, Faculty of Science, Aswan University, 81528 Aswan, Egypt.
| | - Stephan Hüttel
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), partner site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany.
| | - Daoud Harzallah
- Laboratory of Applied Microbiology, Department of Microbiology, Faculty of Natural and Life Sciences, University Sétif 1 Ferhat Abbas, 19000 Sétif, Algeria.
| | - Marc Stadler
- Department of Microbial Drugs, Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF), partner site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany.
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18
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Yin GP, Wu YR, Yang MH, Li TX, Wang XB, Zhou MM, Lei JL, Kong LY. Citrifurans A-D, Four Dimeric Aromatic Polyketides with New Carbon Skeletons from the Fungus Aspergillus sp. Org Lett 2017; 19:4058-4061. [PMID: 28726414 DOI: 10.1021/acs.orglett.7b01823] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Citrifurans A-D (1-4), metabolized by an Aspergillus sp., are unusual dimers of azaphilone and furanone derivatives. Michael addition was thought to be the pivotal procedure in their biosynthesis, and different addition sites generated two new different carbon skeletons. Their structures were elucidated on the basis of spectroscopic methods, single-crystal X-ray diffraction, chemical conversion, and electronic circular dichroism analyses. Compounds 1-3 showed moderate inhibitory activities against LPS-induced NO production in RAW 264.7 macrophages with IC50 values of 18.3, 22.6, and 25.3 μM, respectively.
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Affiliation(s)
- Guo-Ping Yin
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ya-Rong Wu
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ming-Hua Yang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Tian-Xiao Li
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Xiao-Bing Wang
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Miao-Miao Zhou
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Jian-Li Lei
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
| | - Ling-Yi Kong
- Jiangsu Key Laboratory of Bioactive Natural Product Research and State Key Laboratory of Natural Medicines, China Pharmaceutical University , 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China
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19
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Xu JW, Ji PY, Liu YF, Luo WP, Liu Q, Guo CC. Copper(I)-Catalyzed α-Acryloyloxylation of Ketones with α,β-Unsaturated Carboxylic Acids To Form α-Acryloyloxy Ketones. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601346] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jing-Wen Xu
- College of Chemistry and Chemical Engineering; Advanced Catalytic Engineering Research Center of the Ministry of Education; Hunan University; 410082 Changsha China
| | - Peng-Yi Ji
- College of Chemistry and Chemical Engineering; Advanced Catalytic Engineering Research Center of the Ministry of Education; Hunan University; 410082 Changsha China
| | - Yu-Feng Liu
- College of Chemistry and Chemical Engineering; Advanced Catalytic Engineering Research Center of the Ministry of Education; Hunan University; 410082 Changsha China
| | - Wei-Ping Luo
- College of Chemistry and Chemical Engineering; Advanced Catalytic Engineering Research Center of the Ministry of Education; Hunan University; 410082 Changsha China
| | - Qiang Liu
- College of Chemistry and Chemical Engineering; Advanced Catalytic Engineering Research Center of the Ministry of Education; Hunan University; 410082 Changsha China
| | - Can-Cheng Guo
- College of Chemistry and Chemical Engineering; Advanced Catalytic Engineering Research Center of the Ministry of Education; Hunan University; 410082 Changsha China
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20
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Hara Y, Kusano Y, Ohmatsu K, Ooi T. Palladium-catalyzed Branch-selective Decarboxylative Allylation Using Ion-paired Ligands. CHEM LETT 2016. [DOI: 10.1246/cl.160158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yoshiyuki Hara
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
| | - Yuya Kusano
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
| | - Kohsuke Ohmatsu
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM), and Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
- CREST, Japan Science and Technology Agency (JST)
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21
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Wang WG, Li A, Yan BC, Niu SB, Tang JW, Li XN, Du X, Challis GL, Che Y, Sun HD, Pu JX. LC-MS-Guided Isolation of Penicilfuranone A: A New Antifibrotic Furancarboxylic Acid from the Plant Endophytic Fungus Penicillium sp. sh18. JOURNAL OF NATURAL PRODUCTS 2016; 79:149-155. [PMID: 26677752 DOI: 10.1021/acs.jnatprod.5b00814] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Penicilfuranone A (1), a novel furancarboxylic acid, and its proposed biosynthetic precursor, gregatin A (2), were isolated from the cultures of the fungus Penicillium sp. sh18 endophytic to the stems of Isodon eriocalyx var. laxiflora guided by HPLC-MS. X-ray crystallography was applied to the structure determination of furancarboxylic acid for the first time, allowing unambiguous assignment of 1. Penicilfuranone A displays a significant antifibrotic effect in activated hepatic stellate cells via negative regulation of transforming growth factor-β (TGF-β)/Smad signaling.
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Affiliation(s)
- Wei-Guang Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Ao Li
- College of Pharmacy and Bioengineering, Chongqing University of Technology , Chongqing 400054, People's Republic of China
| | - Bing-Chao Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Shu-Bin Niu
- State Key Laboratory of Toxicology & Medical Countermeasures, Beijing Institute of Pharmacology & Toxicology , Beijing 100850, People's Republic of China
| | - Jian-Wei Tang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
- University of Chinese Academy of Sciences , Beijing 100049, 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 650201, Yunnan, People's Republic of China
| | - Xue Du
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Gregory L Challis
- Department of Chemistry, University of Warwick , Coventry CV4 7AL, United Kingdom
| | - Yongsheng Che
- State Key Laboratory of Toxicology & Medical Countermeasures, Beijing Institute of Pharmacology & Toxicology , Beijing 100850, People's Republic of China
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
| | - Jian-Xin Pu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, Yunnan, People's Republic of China
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22
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Zhao S, Chen S, Wang B, Niu S, Wu W, Guo L, Che Y. Four new tetramic acid and one new furanone derivatives from the plant endophytic fungus Neopestalotiopsis sp. Fitoterapia 2015; 103:106-12. [DOI: 10.1016/j.fitote.2015.03.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/20/2015] [Accepted: 03/22/2015] [Indexed: 10/23/2022]
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23
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Liu CX, Wang L, Chen JF, Guo ZY, Tu X, Deng ZS, Zou K. Paraconfuranones A-H, eight new furanone analogs from the insect-associated fungus Paraconiothyrium brasiliense MZ-1. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2015; 53:317-322. [PMID: 25594922 DOI: 10.1002/mrc.4197] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 11/11/2014] [Accepted: 11/13/2014] [Indexed: 06/04/2023]
Affiliation(s)
- Cheng-Xiong Liu
- School of Basic Medical Sciences, Wuhan University, Wuhan, 430072, China; Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, Three Gorges University, Yichang, 443002, China
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24
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Tang HY, Zhang Q, Gao YQ, Zhang AL, Gao JM. Miniolins A–C, novel isomeric furanones induced by epigenetic manipulation of Penicillium minioluteum. RSC Adv 2015. [DOI: 10.1039/c4ra11712c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Cultivation of Penicillium minioluteum with a DNA methyltransferase inhibitor led to the isolation of a novel type of aspertetronin dimer, miniolins A–C, along with their precursor. The dimeric absolute configurations were assigned by chiral HPLC and ECD calculations.
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Affiliation(s)
- Hao-Yu Tang
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - Qiang Zhang
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - Yu-Qi Gao
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - An-Ling Zhang
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - Jin-Ming Gao
- College of Science
- Northwest A&F University
- Yangling 712100
- China
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25
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Wijeratne EMK, Xu Y, Arnold AE, Gunatilaka AAL. Pulvinulin A, Graminin C, and cis-Gregatin B – New Natural Furanones from Pulvinula sp. 11120, a Fungal Endophyte of Cupressus arizonica. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Three new natural furanones, pulvinulin A (1), graminin C (2), and cis-gregatin B (3), together with the known fungal metabolites, graminin B (4) and 10-norparvulenone (5), were isolated from Pulvinula sp. 11120, an endophytic fungal strain occurring in healthy foliage of Cupressus arizonica (Arizona cypress). The structures of 1 and 2 were elucidated by the analysis of their spectroscopic data and chemical interconversions, and that of 3 was determined by comparison with data for synthetic cis-gregatin B. Comparison of spectroscopic data of 4 and 5 with those reported identified them as graminin B and 10-norparvulenone, respectively. Metabolites 1–4 exhibited antibacterial activity against E. coli.
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Affiliation(s)
- E. M. Kithsiri Wijeratne
- Southwest Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, The University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, USA
| | - Yaming Xu
- Southwest Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, The University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, USA
| | - A. Elizabeth Arnold
- School of Plant Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, Arizona 85721-0036, USA
| | - A. A. Leslie Gunatilaka
- Southwest Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, The University of Arizona, 250 E. Valencia Road, Tucson, Arizona 85706-6800, USA
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Weber F, Brückner R. Total Syntheses of the Dihydrofuranonecarboxylate Natural Products Gregatin B and E: Gram-Scale Synthesis of (+)-Gregatin B and Unambiguous Assignment of the Stereostructure of (+)-Gregatin E. Org Lett 2014; 16:6428-31. [DOI: 10.1021/ol5032602] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fabian Weber
- Institut für Organische
Chemie, Albert-Ludwigs-Universität, Albertstraße 21, 79104 Freiburg im Breisgau, Germany
| | - Reinhard Brückner
- Institut für Organische
Chemie, Albert-Ludwigs-Universität, Albertstraße 21, 79104 Freiburg im Breisgau, Germany
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Affiliation(s)
- Taichi Kusakabe
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Yasuko Kawai
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
| | - Keisuke Kato
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan
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Kusakabe T, Takahashi T, Shen R, Ikeda A, Dhage YD, Kanno Y, Inouye Y, Sasai H, Mochida T, Kato K. Carbonylation of Propargyl Carbamates with Palladium(II) Bisoxazoline Catalysts: Efficient Synthesis of 5-Methoxy-3(2H)-furanones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303684] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Kusakabe T, Takahashi T, Shen R, Ikeda A, Dhage YD, Kanno Y, Inouye Y, Sasai H, Mochida T, Kato K. Carbonylation of Propargyl Carbamates with Palladium(II) Bisoxazoline Catalysts: Efficient Synthesis of 5-Methoxy-3(2H)-furanones. Angew Chem Int Ed Engl 2013; 52:7845-9. [DOI: 10.1002/anie.201303684] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 05/26/2013] [Indexed: 02/05/2023]
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