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Reveglia P, Agudo-Jurado FJ, Barilli E, Masi M, Evidente A, Rubiales D. Uncovering Phytotoxic Compounds Produced by Colletotrichum spp. Involved in Legume Diseases Using an OSMAC-Metabolomics Approach. J Fungi (Basel) 2023; 9:610. [PMID: 37367546 DOI: 10.3390/jof9060610] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/28/2023] Open
Abstract
Different fungal species belonging to the Colletotrichum genus cause anthracnose disease in a range of major crops, resulting in huge economic losses worldwide. Typical symptoms include dark, sunken lesions on leaves, stems, or fruits. Colletotrichum spp. have synthesized, in vitro, a number of biologically active and structurally unusual metabolites that are involved in their host's infection process. In this study, we applied a one strain many compounds (OSMAC) approach, integrated with targeted and non-targeted metabolomics profiling, to shed light on the secondary phytotoxic metabolite panels produced by pathogenic isolates of Colletotrichum truncatum and Colletotrichum trifolii. The phytotoxicity of the fungal crude extracts was also assessed on their primary hosts and related legumes, and the results correlated with the metabolite profile that arose from the different cultural conditions. To the best of our knowledge, this is the first time that the OSMAC strategy integrated with metabolomics approaches has been applied to Colletotrichum species involved in legume diseases.
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Affiliation(s)
| | | | - Eleonora Barilli
- Institute for Sustainable Agriculture, CSIC, 14004 Cordoba, Spain
| | - Marco Masi
- Department of Chemical Sciences, University of Naples Federico II (UNINA), 80126 Naples, Italy
| | - Antonio Evidente
- Department of Chemical Sciences, University of Naples Federico II (UNINA), 80126 Naples, Italy
- Institute of Sciences of Food Production, National Research Council (ISPA-CNR), 70125 Bari, Italy
| | - Diego Rubiales
- Institute for Sustainable Agriculture, CSIC, 14004 Cordoba, Spain
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Rawat M, Rawat DS. Mesoporous Copper-Magnesium Oxide Hybrid Nanocatalyzed Synthesis of 3-Substituted Isocoumarins from 2-Iodobenzoic Acid and Terminal Alkyne under Green Conditions. ACS OMEGA 2023; 8:16263-16272. [PMID: 37179619 PMCID: PMC10173437 DOI: 10.1021/acsomega.3c00710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/12/2023] [Indexed: 05/15/2023]
Abstract
A 3-substituted isocoumarin scaffold has captivated extensive interest in synthetic and medicinal chemistry due to its presence in various natural products with diverse biological activities. Herein, we report a mesoporous CuO@MgO nanocomposite that was prepared via the sugar-blowing induced confined method with an E-factor of 12.2 and its catalytic potential in the facile synthesis of 3-substituted isocoumarin from 2-iodobenzoic acids and terminal alkynes. Powder X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive X-ray analysis, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller techniques were utilized for the characterization of the as-prepared nanocomposite. A broad substrate scope, mild reaction conditions, excellent yield in short reaction time, no usage of additives, and better green chemistry metrices such as a low E-factor (0.71), high reaction mass efficiency (58.28%), low process mass efficiency (1.71), and high turnover number (629) are the various advantages of the present synthetic route. The nanocatalyst was recycled and reused up to five runs without significant loss in its catalytic activity and a very low leaching of copper (3.20 ppm) and magnesium ions (0.72 ppm). Powder X-ray diffraction and high-resolution transmission electron microscopy techniques confirmed the structural integrity of the recycled CuO@MgO nanocomposite.
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3
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Tammam MA, Gamal El-Din MI, Abood A, El-Demerdash A. Recent advances in the discovery, biosynthesis, and therapeutic potential of isocoumarins derived from fungi: a comprehensive update. RSC Adv 2023; 13:8049-8089. [PMID: 36909763 PMCID: PMC9999372 DOI: 10.1039/d2ra08245d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Accepted: 02/26/2023] [Indexed: 03/12/2023] Open
Abstract
Microorganisms still remain the main hotspots in the global drug discovery avenue. In particular, fungi are highly prolific producers of vast structurally diverse specialized secondary metabolites, which have displayed a myriad of biomedical potentials. Intriguingly, isocoumarins is one distinctive class of fungal natural products polyketides, which demonstrated numerous remarkable biological and pharmacological activities. This review article provides a comprehensive state-of-the-art over the period 2000-2022 about the discovery, isolation, classifications, and therapeutic potentials of isocoumarins exclusively reported from fungi. Indeed, a comprehensive list of 351 structurally diverse isocoumarins were documented and classified according to their fungal sources [16 order/28 family/55 genera] where they have been originally discovered along with their reported pharmacological activities wherever applicable. Also, recent insights around their proposed and experimentally proven biosynthetic pathways are also briefly discussed.
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Affiliation(s)
- Mohamed A Tammam
- Department of Biochemistry, Faculty of Agriculture, Fayoum University Fayoum 63514 Egypt
| | - Mariam I Gamal El-Din
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University Cairo 11566 Egypt
| | - Amira Abood
- Chemistry of Natural and Microbial Products Department, National Research Center Dokki Cairo Egypt
- School of Bioscience, University of Kent Canterbury UK
| | - Amr El-Demerdash
- Organic Chemistry Division, Department of Chemistry, Faculty of Sciences, Mansoura University Mansoura 35516 Egypt
- Department of Biochemistry and Metabolism, John Innes Centre Norwich Research Park Norwich NR4 7UH UK
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4
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Toopaang W, Bunnak W, Srisuksam C, Wattananukit W, Tanticharoen M, Yang YL, Amnuaykanjanasin A. Microbial polyketides and their roles in insect virulence: from genomics to biological functions. Nat Prod Rep 2022; 39:2008-2029. [PMID: 35822627 DOI: 10.1039/d1np00058f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: May 1966 up to January 2022Entomopathogenic microorganisms have potential for biological control of insect pests. Their main secondary metabolites include polyketides, nonribosomal peptides, and polyketide-nonribosomal peptide (PK-NRP) hybrids. Among these secondary metabolites, polyketides have mainly been studied for structural identification, pathway engineering, and for their contributions to medicine. However, little is known about the function of polyketides in insect virulence. This review focuses on the role of bacterial and fungal polyketides, as well as PK-NRP hybrids in insect infection and killing. We also discuss gene distribution and evolutional relationships among different microbial species. Further, the role of microbial polyketides and the hybrids in modulating insect-microbial symbiosis is also explored. Understanding the mechanisms of polyketides in insect pathogenesis, how compounds moderate the host-fungus interaction, and the distribution of PKS genes across different fungi and bacteria will facilitate the discovery and development of novel polyketide-derived bio-insecticides.
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Affiliation(s)
- Wachiraporn Toopaang
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand. .,Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica and National Chung Hsing University, Taiwan.,Agricultural Biotechnology Research Center, Academia Sinica, Taipei 11529, Taiwan.
| | - Warapon Bunnak
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
| | - Chettida Srisuksam
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
| | - Wilawan Wattananukit
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
| | - Morakot Tanticharoen
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei 11529, Taiwan. .,Biotechnology Center in Southern Taiwan, Academia Sinica, Tainan 711010, Taiwan
| | - Alongkorn Amnuaykanjanasin
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, 113 Thailand Science Park, Phahonyothin Rd., Khlong Nueng, Amphoe Khlong Luang, Pathum Thani 12120, Thailand.
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5
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Microbial Natural Products with Antiviral Activities, Including Anti-SARS-CoV-2: A Review. Molecules 2022; 27:molecules27134305. [PMID: 35807550 PMCID: PMC9268554 DOI: 10.3390/molecules27134305] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/25/2022] [Accepted: 06/29/2022] [Indexed: 02/06/2023] Open
Abstract
The SARS-CoV-2 virus, which caused the COVID-19 infection, was discovered two and a half years ago. It caused a global pandemic, resulting in millions of deaths and substantial damage to the worldwide economy. Currently, only a few vaccines and antiviral drugs are available to combat SARS-CoV-2. However, there has been an increase in virus-related research, including exploring new drugs and their repurposing. Since discovering penicillin, natural products, particularly those derived from microbes, have been viewed as an abundant source of lead compounds for drug discovery. These compounds treat bacterial, fungal, parasitic, and viral infections. This review incorporates evidence from the available research publications on isolated and identified natural products derived from microbes with anti-hepatitis, anti-herpes simplex, anti-HIV, anti-influenza, anti-respiratory syncytial virus, and anti-SARS-CoV-2 properties. About 131 compounds with in vitro antiviral activity and 1 compound with both in vitro and in vivo activity have been isolated from microorganisms, and the mechanism of action for some of these compounds has been described. Recent reports have shown that natural products produced by the microbes, such as aurasperone A, neochinulin A and B, and aspulvinone D, M, and R, have potent in vitro anti-SARS-CoV-2 activity, targeting the main protease (Mpro). In the near and distant future, these molecules could be used to develop antiviral drugs for treating infections and preventing the spread of disease.
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6
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Fungal-derived compounds and mycogenic nanoparticles with antimycobacterial activity: a review. SN APPLIED SCIENCES 2022. [DOI: 10.1007/s42452-022-05010-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
AbstractTuberculosis (TB) is a persistent lung infection caused by Mycobacterium tuberculosis. The disease is characterized by high mortality rates of over 1 million per year. Unfortunately, the potency and effectiveness of currently used anti-TB drugs is gradually decreasing due to the constant development of persistence and resistance by M. tuberculosis. The adverse side effects associated with current anti-TB drugs, along with anti-TB drug resistance, present an opportunity to bio-prospect novel potent anti-TB drugs from unique sources. Fundamentally, fungi are a rich source of bioactive secondary metabolites with valuable therapeutic potential. Enhancing the potency and effectiveness of fungal-based anti-TB drug leads by chemical synthesis and/or modification with nanomaterials, may result in the discovery of novel anti-TB drugs. In this review, the antimycobacterial activity of fungal-derived compounds and mycogenic nanoparticles are summarized. Numerous fungal-derived compounds as well as some mycogenic nanoparticles that exhibit strong antimycobacterial activity that is comparable to that of approved drugs, were found. If fully explored, fungi holds the promise to become key drivers in the generation of lead compounds in TB-drug discovery initiatives.
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7
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Li X, li D, zhang X. Ru(II)-Catalyzed C-H Bond Activation/Annulation of N-iminopyridinium Ylides with Sulfoxonium Ylides. Org Biomol Chem 2022; 20:1475-1479. [DOI: 10.1039/d1ob02427b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Ru(II)-catalyzed C-H bond activation/annulation of N-iminopyridinium ylides with sulfoxonium ylides has been developed for the synthesis of diverse functionalized isocoumarin derivatives. This method features broad substrate scope, high-functional-group tolerance,...
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8
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Wu H, Wang YC, Shatskiy A, Li QY, Liu JQ, Kärkäs MD, Wang XS. Modular synthesis of 3-substituted isocoumarins via silver-catalyzed aerobic oxidation/ 6-endo heterocyclization of ortho-alkynylbenzaldehydes. Org Biomol Chem 2021; 19:6657-6664. [PMID: 34271583 DOI: 10.1039/d1ob01065d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A method involving silver-catalyzed aerobic oxidation/6-endo heterocyclization of ortho-alkynylbenzaldehydes to yield 3-substituted isocoumarins is described. The developed protocol allows convenient access to a range of synthetically useful 3-substituted isocoumarins and related fused heterocyclolactones in good to high yields, using silver tetrafluoroborate as the catalyst, and atmospheric oxygen as the terminal oxidant and the source of endocyclic oxygen. Mechanistic studies suggest the involvement of a free-radical pathway.
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Affiliation(s)
- Hao Wu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Yi-Chun Wang
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Andrey Shatskiy
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Qiu-Yan Li
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
| | - Jian-Quan Liu
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China. and Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Markus D Kärkäs
- Department of Chemistry, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
| | - Xiang-Shan Wang
- School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou, Jiangsu 221116, China.
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9
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Ha SK, Kang MC, Lee S, Darlami O, Shin D, Choi I, Kim KH, Kim SY. Generation of Stilbene Glycoside with Promising Cell Rejuvenation Activity through Biotransformation by the Entomopathogenic Fungus Beauveria bassiana. Biomedicines 2021; 9:555. [PMID: 34067529 PMCID: PMC8156121 DOI: 10.3390/biomedicines9050555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 11/16/2022] Open
Abstract
A stilbene glycoside (resvebassianol A) (1) with a unique sugar unit, 4-O-methyl-D-glucopyranose, was identified through biotransformation of resveratrol (RSV) by the entomopathogenic fungus Beauveria bassiana to obtain a superior RSV metabolite with enhanced safety. Its structure, including its absolute configurations, was determined using spectroscopic data, HRESIMS, and chemical reactions. Microarray analysis showed that the expression levels of filaggrin, HAS2-AS1, and CERS3 were higher, while those of IL23A, IL1A, and CXCL8 were lower in the resvebassianol A-treated group than in the RSV-treated group, as confirmed by qRT-PCR. Compound 1 exhibited the same regenerative and anti-inflammatory effects as RSV with no cytotoxicity in skin keratinocytes and TNF-α/IFN-γ-stimulated HIEC-6 cells, suggesting that compound 1 is a safe and stable methylglycosylated RSV. Our findings suggest that our biotransformation method can be an efficient biosynthetic platform for producing a broad range of natural glycosides with enhanced safety.
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Affiliation(s)
- Sang Keun Ha
- Division of Food Functionality Research, Korea Food Research Institute, Wanju 55365, Korea;
- Divison of Food Biotechnology, University of Science and Technology, Daejeon 34113, Korea
| | - Min Cheol Kang
- College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Korea; (M.C.K.); (O.D.); (D.S.)
| | - Seulah Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea;
- Division of Life Sciences, Korea Polar Research Institute, KIOST, Incheon 21990, Korea
| | - Om Darlami
- College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Korea; (M.C.K.); (O.D.); (D.S.)
| | - Dongyun Shin
- College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Korea; (M.C.K.); (O.D.); (D.S.)
| | - Inwook Choi
- Division of Food Functionality Research, Korea Food Research Institute, Wanju 55365, Korea;
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea;
| | - Sun Yeou Kim
- College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Korea; (M.C.K.); (O.D.); (D.S.)
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11
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Wen H, Zang Y, Zhu Q, Ouyang S, Luo J, Luo N, Zhu H, Zhang Y. Two new phenolic glucosides from marine-derived fungus Aspergillus sp. Nat Prod Res 2020; 36:3255-3261. [PMID: 33289426 DOI: 10.1080/14786419.2020.1851226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Two new phenolic glucosides, including a new O-glycoside (1) and a new C-glycoside (2), were isolated from a marine-derived fungus Aspergillus sp. The structures of new compounds were elucidated through interpretations of spectroscopic evidence and high-resolution electrospray ionization mass spectrometry. The hexose unit of 1 was identified as β-D-glucose by comparison with an authentic sample via HPLC after acid hydrolysis and derivatization. All compounds were evaluated for their ability to inhibit LPS-induced NO production in RAW264.7 macrophages, but none of them displayed significant activity.
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Affiliation(s)
- Huiling Wen
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, China.,Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Zang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Qianheng Zhu
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, China
| | - Sheng Ouyang
- Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Juanjuan Luo
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, China
| | - Nianhua Luo
- School of Pharmaceutical Sciences, Gannan Medical University, Ganzhou, 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, 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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12
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Zhang L, Fasoyin OE, Molnár I, Xu Y. Secondary metabolites from hypocrealean entomopathogenic fungi: novel bioactive compounds. Nat Prod Rep 2020; 37:1181-1206. [PMID: 32211639 PMCID: PMC7529686 DOI: 10.1039/c9np00065h] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Covering: 2014 up to the third quarter of 2019 Entomopathogens constitute a unique, specialized trophic subgroup of fungi, most of whose members belong to the order Hypocreales (class Sordariomycetes, phylum Ascomycota). These Hypocrealean Entomopathogenic Fungi (HEF) produce a large variety of secondary metabolites (SMs) and their genomes rank highly for the number of predicted, unique SM biosynthetic gene clusters. SMs from HEF have diverse roles in insect pathogenicity as virulence factors by modulating various interactions between the producer fungus and its insect host. In addition, these SMs also defend the carcass of the prey against opportunistic microbial invaders, mediate intra- and interspecies communication, and mitigate abiotic and biotic stresses. Thus, these SMs contribute to the role of HEF as commercial biopesticides in the context of integrated pest management systems, and provide lead compounds for the development of chemical pesticides for crop protection. These bioactive SMs also underpin the widespread use of certain HEF as nutraceuticals and traditional remedies, and allowed the modern pharmaceutical industry to repurpose some of these molecules as life-saving human medications. Herein, we survey the structures and biological activities of SMs described from HEF, and summarize new information on the roles of these metabolites in fungal virulence.
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Affiliation(s)
- Liwen Zhang
- Biotechnology Research Institute, The Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, P.R. China.
| | - Opemipo Esther Fasoyin
- Biotechnology Research Institute, The Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, P.R. China.
| | - István Molnár
- Southwest Center for Natural Products Research, University of Arizona, 250 E. Valencia Rd., Tucson, AZ 85706, USA.
| | - Yuquan Xu
- Biotechnology Research Institute, The Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, P.R. China.
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13
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Wen S, Chen Y, Zhao Z, Ba D, Lv W, Cheng G. Ruthenium(II)-Catalyzed Construction of Isocoumarins via Dual C–H/C–C Activation of Sulfoxonium Ylides. J Org Chem 2019; 85:1216-1223. [DOI: 10.1021/acs.joc.9b02520] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Si Wen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Yanhui Chen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Zemin Zhao
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Dan Ba
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Weiwei Lv
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Guolin Cheng
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
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14
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Coumamarin: a first coumarinyl calcium complex isolated from nature. J Antibiot (Tokyo) 2019; 72:729-735. [DOI: 10.1038/s41429-019-0207-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/01/2019] [Accepted: 06/11/2019] [Indexed: 01/28/2023]
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15
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Phenolic glucosides and chromane analogs from the insect fungus Conoideocrella krungchingensis BCC53666. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Yuan J, Zeng F, Mai W, Yang L, Xiao Y, Mao P, Wei D. Fluorination-triggered tandem cyclization of styrene-type carboxylic acids to access 3-aryl isocoumarin derivatives under microwave irradiation. Org Biomol Chem 2019; 17:5038-5046. [PMID: 31045201 DOI: 10.1039/c9ob00509a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical and straightforward synthetic route through a fluorination-triggered tandem cyclization of styrene-type carboxylic acids was developed to construct a variety of 4-fluoro-3-aryl-3,4-dihydroisocoumarins and 3-arylisocoumarins under microwave irradiation. This novel protocol features mild reaction conditions and operational simplicity, with good yields.
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Affiliation(s)
- Jinwei Yuan
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Fanlin Zeng
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Wenpeng Mai
- School of Material and Chemical Engineering, Henan Institute of Engineering, Zhengzhou 451191, P. R. China
| | - Liangru Yang
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Yongmei Xiao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Pu Mao
- School of Chemistry & Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China.
| | - Donghui Wei
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
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17
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Xu Y, Wang C, Liu H, Zhu G, Fu P, Wang L, Zhu W. Meroterpenoids and Isocoumarinoids from a Myrothecium Fungus Associated with Apocynum Venetum. Mar Drugs 2018; 16:md16100363. [PMID: 30275406 PMCID: PMC6213923 DOI: 10.3390/md16100363] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 12/28/2022] Open
Abstract
Four new meroterpenoids 1⁻4 and four new isocoumarinoids 5⁻8, along with five known isocoumarinoids (9⁻13), were isolated from the fungus Myrothecium sp. OUCMDZ-2784 associated with the salt-resistant medicinal plant, Apocynum venetum (Apocynaceae). Their structures were elucidated by means of spectroscopic analysis, X-ray crystallography, ECD spectra and quantum chemical calculations. Compounds 1⁻5, 7, 9 and 10 showed weak α-glucosidase inhibition with the IC50 values of 0.50, 0.66, 0.058, 0.20, 0.32, 0.036, 0.026 and 0.37 mM, respectively.
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Affiliation(s)
- Yanchao Xu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China.
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China.
| | - Cong Wang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China.
| | - Haishan Liu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Guoliang Zhu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Peng Fu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China.
| | - Liping Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China.
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Weiming Zhu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China.
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China.
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18
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Saikia P, Gogoi S. Isocoumarins: General Aspects and Recent Advances in their Synthesis. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800019] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Pallabi Saikia
- Department of Chemistry; Assam Kaziranga University; Jorhat - 785006 Assam India
| | - Sanjib Gogoi
- Chemical Sciences & Technology Division, CSIR - North East Institute of Science and Technology; AcSIR; Jorhat - 785006 Assam India
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19
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Saepua S, Kornsakulkarn J, Somyong W, Laksanacharoen P, Isaka M, Thongpanchang C. Bioactive compounds from the scale insect fungus Conoideocrella tenuis BCC 44534. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Dana S, Mandal A, Sahoo H, Mallik S, Grandhi GS, Baidya M. Ru(II)-Catalyzed Oxidative Heck-Type Olefination of Aromatic Carboxylic Acids with Styrenes through Carboxylate-Assisted C-H Bond Activation. Org Lett 2018; 20:716-719. [PMID: 29341627 DOI: 10.1021/acs.orglett.7b03852] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A straightforward synthesis of 2-styrylbenzoic acids from aryl carboxylic acids is disclosed through a carboxylate-assisted coupling under Ru(II) catalysis. This protocol is simple and exhibits broad scope with high tolerance of common organic functional groups, providing good to excellent yields of diverse olefinated products. The efficacy of this protocol has been showcased through sequential syntheses of isochromanone, isocoumarin, and formal synthesis of anacardic acid derivative in good yields.
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Affiliation(s)
- Suman Dana
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India
| | - Anup Mandal
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India
| | - Harekrishna Sahoo
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India
| | - Sumitava Mallik
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India
| | - Gowri Sankar Grandhi
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, Tamil Nadu, India
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21
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Copper nanoparticles catalyzed economical synthesis of 3-substituted isocoumarins from 2-chlorobenzoic acids/amides and 1,3-diketones. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Akanthopyrones A-D, α-Pyrones Bearing a 4-O-Methyl-β-d-glucopyranose Moiety from the Spider-Associated Ascomycete Akanthomyces novoguineensis. Molecules 2017; 22:molecules22071202. [PMID: 28718819 PMCID: PMC6152309 DOI: 10.3390/molecules22071202] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 07/13/2017] [Indexed: 11/28/2022] Open
Abstract
Hypocrealean fungi have proved to be prolific bioactive metabolite producers; they have caught the attention of mycologists throughout the world. However, only a few studies on the insect and spider parasitic genus Akanthomyces have so far been carried out. In this study, we report the isolation, structural elucidation and biological activities of four unprecedented glycosylated α-pyrone derivatives, akanthopyrones A–D (1–4), from a culture of Akanthomyces novoguineensis collected in Thailand. The chemical structures of the akanthopyrones were determined by extensive 1D- and 2D-NMR, and HRMS spectroscopic analysis. Their absolute configurations were determined. Akanthopyrone A (1) exhibited weak antimicrobial activity against Bacillus subtilis DSM10 and cytotoxicity against the HeLa cell line KB-3-1, while akanthopyrone D (4) showed weak activity against Candida tenuis MUCL 29892.
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23
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Hussain H, Green IR. A patent review of two fruitful decades (1997-2016) of Isocoumarin research. Expert Opin Ther Pat 2017. [DOI: 10.1080/13543776.2017.1344220] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Hidayat Hussain
- UoN Chair of Oman’s Medicinal Plants and Marine Natural Products, University of Nizwa, Nizwa, Sultanate of Oman
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California-San Diego, La Jolla, CA 92093-0204, USA
| | - Ivan R Green
- Department of Chemistry and Polymer Science, University of Stellenbosch, Stellenbosch, South Africa
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24
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Helaly SE, Kuephadungphan W, Phongpaichit S, Luangsa-Ard JJ, Rukachaisirikul V, Stadler M. Five Unprecedented Secondary Metabolites from the Spider Parasitic Fungus Akanthomyces novoguineensis. Molecules 2017; 22:molecules22060991. [PMID: 28613244 PMCID: PMC6152716 DOI: 10.3390/molecules22060991] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 05/31/2017] [Accepted: 06/01/2017] [Indexed: 11/25/2022] Open
Abstract
Five new compounds including the glycosylated β-naphthol (1, akanthol), a glycosylated pyrazine (2, akanthozine), and three amide derivatives including a hydroxamic acid derivative (3–5) were isolated from the spider-associated fungus Akanthomyces novoguineensis (Cordycipitaceae, Ascomycota). Their structures were elucidated by using high resolution mass spectrometry (HRMS) and NMR spectroscopy. In this study, the antimicrobial, cytotoxic, anti-biofilm, and nematicidal activities of the new compounds were evaluated. The distribution pattern of secondary metabolites in the species was also revealed in which more isolates of A. novoguineensis were encountered and their secondary metabolite profiles were examined using analytical HPLC with diode array and mass spectrometric detection (HPLC-DAD/MS). Remarkably, all isolated compounds are specifically produced by A. novoguineensis.
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Affiliation(s)
- Soleiman E Helaly
- Department of Microbial Drugs, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
- Department of Chemistry, Faculty of Science, Aswan University, Aswan 81528, Egypt.
| | - Wilawan Kuephadungphan
- Department of Microbial Drugs, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand.
| | - Souwalak Phongpaichit
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand.
- Natural Products Research Center of Excellence and Department of Microbiology, Prince of Songkla University, Songkhla 90112, Thailand.
| | | | - Vatcharin Rukachaisirikul
- Department of Chemistry, Faculty of Science, Prince of Songkla University, Songkhla 90112, Thailand.
- Center of Excellence for Innovation in Chemistry, Prince of Songkla University, Songkhla 90112, Thailand.
| | - Marc Stadler
- Department of Microbial Drugs, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany.
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25
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Shi T, Qi J, Shao CL, Zhao DL, Hou XM, Wang CY. Bioactive Diphenyl Ethers and Isocoumarin Derivatives from a Gorgonian-Derived Fungus Phoma sp. (TA07-1). Mar Drugs 2017; 15:md15060146. [PMID: 28587090 PMCID: PMC5484096 DOI: 10.3390/md15060146] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 05/11/2017] [Accepted: 05/23/2017] [Indexed: 11/16/2022] Open
Abstract
Three new diphenyl ether derivatives-phomaethers A-C (1-3) and five known compounds-including a diphenyl ether analog, 2,3'-dihydroxy-4-methoxy-5',6-dimethyl diphenyl ether (4); and four isocoumarin derivatives, diaportinol (5), desmethyldiaportinol (6), citreoisocoumarinol (7), and citreoisocoumarin (8)-were isolated from a gorgonian-derived fungus Phoma sp. (TA07-1). Their structures were elucidated by extensive spectroscopic investigation. The absolute configurations of 1 and 2 were determined by acid hydrolysis reactions. It was the first report to discover the diphenyl glycoside derivatives from coral-derived fungi. Compounds 1, 3, and 4 showed selective strong antibacterial activity against five pathogenic bacteria with the minimum inhibiting concentration (MIC) values and minimum bactericidal concentration (MBC) values between 0.156 and 10.0 μM.
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Affiliation(s)
- Ting Shi
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Jun Qi
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Dong-Lin Zhao
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Xue-Mei Hou
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, School of Medicine and Pharmacy, Ocean University of China, the Ministry of Education of China, Qingdao 266003, China.
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
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26
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Neog K, Dutta D, Das B, Gogoi P. Coumarin to Isocoumarin: One-Pot Synthesis of 3-Substituted Isocoumarins from 4-Hydroxycoumarins and Benzyne Precursors. Org Lett 2017; 19:730-733. [DOI: 10.1021/acs.orglett.7b00027] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kashmiri Neog
- Applied Organic
Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
| | - Dhiraj Dutta
- Applied Organic
Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
| | - Babulal Das
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Pranjal Gogoi
- Applied Organic
Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India
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27
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Yuan Q, Chen ZB, Zhang FL, Zhu YM. Palladium-catalyzed carbonylative synthesis of isocoumarins and phthalides by using phenyl formate as a carbon monoxide source. Org Biomol Chem 2017; 15:1628-1635. [DOI: 10.1039/c6ob02409b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient palladium-catalyzed carbonylative synthesis of isocoumarins and phthalides by employing phenyl formate as a CO surrogate has been developed.
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Affiliation(s)
- Qing Yuan
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- China
| | - Zhen-Bang Chen
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- China
| | - Fang-Ling Zhang
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- China
| | - Yong-Ming Zhu
- College of Pharmaceutical Sciences
- Soochow University
- Suzhou
- China
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28
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Simic M, Paunovic N, Boric I, Randjelovic J, Vojnovic S, Nikodinovic-Runic J, Pekmezovic M, Savic V. Functionalised isocoumarins as antifungal compounds: Synthesis and biological studies. Bioorg Med Chem Lett 2016; 26:235-9. [DOI: 10.1016/j.bmcl.2015.08.086] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/26/2015] [Accepted: 08/29/2015] [Indexed: 02/01/2023]
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29
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Saepua S, Kornsakulkarn J, Choowong W, Supothina S, Thongpanchang C. Bioxanthracenes and monomeric analogues from insect pathogenic fungus Conoideocrella luteorostrata Zimm. BCC 31648. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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N-Hydroxypyridone alkaloids, chromone derivatives, and tetrahydroxanthones from the scale-insect pathogenic fungus Orbiocrella sp. BCC 33248. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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31
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Hu QF, Ye YQ, Xia CF, Yang JX, Yang YC, Gao XM, Du G, Yang HY, Li YK. Isocoumarins from the Bark of Lindera Caudata. HETEROCYCLES 2014. [DOI: 10.3987/com-14-13068] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Kobayashi K, Miyatani W, Kuroda M. Synthesis of 4-Arylisocoumarins (=4-Aryl-1H-2-benzopyran-1-ones) through Acidic Hydrolysis of (Z)-2-(1-Aryl-2-methoxyethenyl)benzaldehydes, Followed by Oxidation. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201300239] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Deponti M, Kozhushkov SI, Yufit DS, Ackermann L. Ruthenium-catalyzed C–H/O–H and C–H/N–H bond functionalizations: oxidative annulations of cyclopropyl-substituted alkynes. Org Biomol Chem 2013; 11:142-8. [DOI: 10.1039/c2ob26250a] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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34
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Fei XD, Ge ZY, Tang T, Zhu YM, Ji SJ. Palladium-catalyzed synthesis of isocoumarins and phthalides via tert-butyl isocyanide insertion. J Org Chem 2012; 77:10321-8. [PMID: 23101723 DOI: 10.1021/jo302004u] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A novel and highly efficient strategy for the synthesis of isocoumarins and phthalides through a palladium(0)-catalyzed reaction incorporating tert-butyl isocyanide has been developed. This process, providing one of the simplest methods for the synthesis of this class of valuable lactones, involves two steps including cyclization reaction and simple acid hydrolysis. The methodology is tolerant of a wide range of substrates and applicable to library synthesis.
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Affiliation(s)
- Xiang-Dong Fei
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, China
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35
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Isaka M, Palasarn S, Tobwor P, Boonruangprapa T, Tasanathai K. Bioactive anthraquinone dimers from the leafhopper pathogenic fungus Torrubiella sp. BCC 28517. J Antibiot (Tokyo) 2012; 65:571-4. [DOI: 10.1038/ja.2012.76] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Isaka M, Palasarn S, Supothina S, Komwijit S, Luangsa-ard JJ. Bioactive compounds from the scale insect pathogenic fungus Conoideocrella tenuis BCC 18627. JOURNAL OF NATURAL PRODUCTS 2011; 74:782-789. [PMID: 21473608 DOI: 10.1021/np100849x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A new cyclohexadepsipeptide, conoideocrellide A (1), its linear derivatives, conoideocrellides B-D (2-4), three new hopane triterpenoids (5-7), two new bioxanthracenes (9 and 10), and a new isocoumarin glycoside (13) were isolated from the scale insect pathogenic fungus Conoideocrella tenuis BCC 18627. Biological activities of the new compounds were evaluated.
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Affiliation(s)
- Masahiko Isaka
- National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani 12120, Thailand.
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37
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Zinad DS, Shaaban KA, Abdalla MA, Islam MT, Schüffler A, Laatsch H. Bioactive Isocoumarins from a Terrestrial Streptomyces sp. ANK302. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Four isocoumarins have been isolated from the terrestrial Streptomyces sp. ANK302, namely 6,8-dimethoxy-3-methylisocoumarin (1), 6,8-dihydroxy-3-methylisocoumarin (2), 6,8-dihydroxy-7-methoxy-3-methylisocoumarin (3), and 6,7,8-trimethoxy-3-methylisocoumarin (4). Compound 1 is a new naturally-occurring isocoumarin, and 2 was isolated as a new bacterial product. The structures 1-4 were deduced from high resolution mass, 1D and 2D NMR spectra and by comparison with related compounds from the literature. Compound 2 showed a strong zoosporicidal activity at a concentration of 5 μg/mL against a phytopathogenic oomycete, Plasmopara viticola, and 1 was active against Candida albicans.
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Affiliation(s)
- Dhafer Saber Zinad
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
| | - Khaled A. Shaaban
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
| | - Muna Ali Abdalla
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
| | - Md. Tofazzal Islam
- Department of Crop Sciences, Plant Pathology and Plant Protection, Georg-August Universität Göttingen, Grisebachstraβe 6, 3707 Göttingen, Germany
- Current address: Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur-1706, Bangladesh
| | - Anja Schüffler
- Institute of Biotechnology and Drug Research, D-67663 Kaiserslautern, Germany
| | - Hartmut Laatsch
- Institute of Organic and Biomolecular Chemistry, University of Göttingen, Tammannstrasse 2, D-37077 Göttingen, Germany
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38
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Yan SJ, Chen YL, Liu L, Tang YJ, Lin J. Synthesis of novel tetracyclo-isocoumarins via AcOH-catalyzed cascade reaction of heterocyclic ketene aminals with 2,2-dihydroxy-2H-indene-1,3-dione. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2010.11.100] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Isaka M, Chinthanom P, Supothina S, Tobwor P, Hywel-Jones NL. Pyridone and tetramic acid alkaloids from the spider pathogenic fungus Torrubiella sp. BCC 2165. JOURNAL OF NATURAL PRODUCTS 2010; 73:2057-2060. [PMID: 21090800 DOI: 10.1021/np100492j] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Torrubiellones A-D (1-4), new pyridone and tetramic acid alkaloids, were isolated from the spider pathogenic fungus Torrubiella sp. BCC 2165. Torrubiellone A (1) exhibited antimalarial activity with an IC(50) value of 8.1 μM, while it showed very weak cytotoxic activity.
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Affiliation(s)
- Masahiko Isaka
- National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, Thailand.
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