1
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Sun Y, Liu Y, Jiang P, Wang SY, Pan J, Guan W, Wang YX, Kuang HX, Wang YH, Yang BY. A new 3,4-dihydro isocoumarin and an antiinflammatory coumarin from the roots of Saposhnikovia divaricata (Turcz.) Schischk. Nat Prod Res 2024:1-10. [PMID: 38563116 DOI: 10.1080/14786419.2024.2334317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 03/17/2024] [Indexed: 04/04/2024]
Abstract
Phytochemical investigation of the roots of Saposhnikovia divaricata (Turcz.) Schischk resulted in the isolation of twelve coumarin derivatives including one new 3,4-dihydroisocoumarin (1) and eleven known 3,4-unsubstituted coumarins (2-12). Structural elucidation of compounds 1-12 was established by 1D and 2D NMR spectra referring to the literature, together with high-resolution mass spectrometric analysis. LPS-induced RAW264.7 inflammatory cell model was used to determine the potential antiinflammation activity of all the isolated compounds in vitro. The results showed that compound 3 significantly inhibited the production of lipopolysaccharide (LPS)-induced NO in macrophages (IC50 = 4.54 ± 1.71 μM), more active than the positive control (L-NMMA).
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Affiliation(s)
- Yan Sun
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Yan Liu
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Peng Jiang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Si-Yi Wang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Juan Pan
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Wei Guan
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Yu-Xuan Wang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Hai-Xue Kuang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Yan-Hong Wang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Bing-You Yang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
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2
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Phillips MJA, Huston WM, McDonagh AM, Rawling T. 4-Chloro isocoumarins as Chlamydial Protease Inhibitors and Anti-Chlamydial Agents. Molecules 2024; 29:1519. [PMID: 38611800 PMCID: PMC11013143 DOI: 10.3390/molecules29071519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024] Open
Abstract
4-Chloroisocoumarin compounds have broad inhibitory properties against serine proteases. Here, we show that selected 3-alkoxy-4-chloroisocoumarins preferentially inhibit the activity of the conserved serine protease High-temperature requirement A of Chlamydia trachomatis. The synthesis of a new series of isocoumarin-based scaffolds has been developed, and their anti-chlamydial properties were investigated. The structure of the alkoxy substituent was found to influence the potency of the compounds against High-temperature requirement A, and modifications to the C-7 position of the 3-alkoxy-4-chloroisocoumarin structure attenuate anti-chlamydial properties.
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Affiliation(s)
- Matthew J. A. Phillips
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia;
| | - Wilhelmina M. Huston
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia;
| | - Andrew M. McDonagh
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia;
| | - Tristan Rawling
- School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia;
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3
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Bando K, Kushibe R, Kitaoka N, Tamai Y, Narisawa K, Matsuura H. Isolation, structural elucidation, and biological activity of a novel isocoumarin from the dark septate endophytic fungus Phialocephala fortinii. Z NATURFORSCH C 2024; 79:89-92. [PMID: 38421614 DOI: 10.1515/znc-2023-0139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/13/2024] [Indexed: 03/02/2024]
Abstract
A novel isocoumarin was isolated from the mycelia of the dark septate endophytic fungus Phialocephala fortinii. The chemical structure was determined to be 8-hydroxy-6-methoxy-3,7-dimethyl-1H-2-benzopyran-1-one based on mass spectrometry, 1H-nuclear magnetic resonance (NMR), and 13C-NMR spectroscopic analyses, including 2D-NMR experiments. The isolated compound inhibited root growth of Arabidopsis thaliana, suggesting its potential as a plant growth regulator.
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Affiliation(s)
- Kei Bando
- Research Faculty of Agriculture, 12810 Hokkaido University , Sapporo, Hokkaido, 060-8589, Japan
| | - Ryoga Kushibe
- Research Faculty of Agriculture, 12810 Hokkaido University , Sapporo, Hokkaido, 060-8589, Japan
| | - Naoki Kitaoka
- Research Faculty of Agriculture, 12810 Hokkaido University , Sapporo, Hokkaido, 060-8589, Japan
| | - Yutaka Tamai
- Research Faculty of Agriculture, 12810 Hokkaido University , Sapporo, Hokkaido, 060-8589, Japan
| | - Kazuhiko Narisawa
- Department of Bioresource Science, College of Agriculture, Ibaraki University, Ami, Inashiki, Ibaraki, 300-0393, Japan
| | - Hideyuki Matsuura
- Research Faculty of Agriculture, 12810 Hokkaido University , Sapporo, Hokkaido, 060-8589, Japan
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4
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Li C, Lin X, Wang S, Guan D, Wang X, Yang B, Zhou X, Li J, Xiong B, Liu Y, Sun Y. A New Brominated Isocoumarin from the Marine Starfish-Associated Fungus Aspergillus sp. WXF1904. Chem Biodivers 2024; 21:e202301706. [PMID: 38079052 DOI: 10.1002/cbdv.202301706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 12/05/2023] [Indexed: 02/22/2024]
Abstract
Based on the one strain many compounds strategy, a new brominated isocoumarin, 5-bromo-6,8-dihydroxy-3,7-dimethylisocoumarin (1), along with four new natural products, methyl 3-bromo-2,4-dihydroxy-6-methylbenzoate (2), methyl 2-bromo-4,6-dihydroxybenzoate (3), (E)-3-(3-bromo-4-hydroxyphenyl) acrylic acid (4) and 4-hydroxy-3-methyl-6-phenyl-2H-pyran-2-one (5), and four known compounds, methyl orsellinate (6), 4-hydroxy-3-methyl-6-(1-methyl-1-propenyl)-2H-pyran-2-one (7), pilobolusate (8) and cis-ferulic acid (9), were isolated from the ethyl acetate extract of the fungus Aspergillus sp. WXF1904 under the condition of adding bromine salt to the production medium. The structures of the new compounds were established by analysis of NMR and MS data. Compounds (1-9) were evaluated for inhibitory activity of acetylcholinesterase and pancreatic lipase, the new compound 1, known compounds 6 and 7 displayed weak inhibitory activity against acetylcholinesterase, compounds 2, 5, 7 and 8 showed weak inhibitory activity against pancreatic lipase.
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Affiliation(s)
- Chao Li
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Xiuping Lin
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Shiwei Wang
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Da Guan
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Xiaofang Wang
- Marine Environmental Engineering Center, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
| | - Bin Yang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Jianfang Li
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Bentao Xiong
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Yanmei Sun
- Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, Provincial Key Laboratory of Biotechnology of Shaanxi Province, the College of Life Sciences, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
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5
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Zhang Q, Zhang LY, Shi XY. Copper-Promoted Intramolecular Oxidative Dehydrogenation for Synthesizing Dihydro isocoumarins and Isocoumarins. Molecules 2023; 28:6319. [PMID: 37687148 PMCID: PMC10488872 DOI: 10.3390/molecules28176319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
Isocoumarins and dihydroisocoumarins are important skeletons with a wide range of biological activities, such as anti-bacterial, anti-allergy, anti-fungal, anti-tumor, and anti-HIV properties. Herein, we demonstrated divergent syntheses of isocoumarins and 3,4-dihydroisocoumarins by intramolecular dehydrogenative cyclization of 2-(3-oxobutyl) benzoic acids. This transformation undergoes Csp3-H bonds and O-H bonds coupling in air using copper salt. The reactions may undergo free radical process.
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Affiliation(s)
- Qiang Zhang
- Shaanxi Key Laboratory of Catalysis, School of Chemistry and Environmental Science, Shaanxi University of Technology, Hanzhong 723001, China;
| | - Lin-Yan Zhang
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China;
| | - Xian-Ying Shi
- Key Laboratory of Syngas Conversion of Shaanxi Province, Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, China;
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6
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Wang X, Wanasinghe DN, Zhang J, Ma J, Zhou P, Zhang L, Lu Y, Zhang Z. Insights from the Endophytic Fungi in Amphisphaeria (Sordariomycetes): A. orixae sp. nov. from Orixa japonica and Its Secondary Metabolites. Microorganisms 2023; 11:1268. [PMID: 37317242 DOI: 10.3390/microorganisms11051268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 06/16/2023] Open
Abstract
Endophytic fungi are a remarkably diverse group of microorganisms that have imperceptible associations with their hosts for at least a part of their life cycle. The enormous biological diversity and the capability of producing bioactive secondary metabolites such as alkaloids, terpenoids, and polyketides have attracted the attention of different scientific communities, resulting in numerous investigations on these fungal endophytes. During our surveys of plant-root-based fungi in the mountain areas of Qingzhen, Guizhou Province, several isolates of endophytic fungi were identified. In this study, a novel endophytic fungus was discovered in the roots of a medicinal plant (Orixa japonica) in Southern China and introduced as a new species (Amphisphaeria orixae) based on morphological evidence and molecular phylogenetic analysis (combined ITS and LSU sequence data). To the best of our knowledge, A. orixae is the first reported endophyte as well as the first hyphomycetous asexual morph in Amphisphaeria. A new isocoumarin, (R)-4,6,8-trihydroxy-5-methylisochroman-1-one (1), and 12 known compounds (2-13) were isolated from the rice fermentation products of this fungus. Using 1D- and 2D-NMR, mass spectrometry, and ECD studies, their structures were identified. The antitumor activity of these compounds was tested. Unfortunately, none of the compounds tested showed significant antitumor activity.
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Affiliation(s)
- Xiaojie Wang
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
- Guizhou Academy of Testing and Analysis, Guizhou Academy of Sciences, Guiyang 550014, China
| | - Dhanushka N Wanasinghe
- Centre for Mountain Futures, Kunming Institute of Botany, Chinese Academy of Sciences, Honghe County 654400, China
| | - Jingyi Zhang
- School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Jian Ma
- School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Peifeng Zhou
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
- Guizhou Academy of Testing and Analysis, Guizhou Academy of Sciences, Guiyang 550014, China
| | - Lijuan Zhang
- School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Yongzhong Lu
- School of Food and Pharmaceutical Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Zhen Zhang
- Guizhou Academy of Testing and Analysis, Guizhou Academy of Sciences, Guiyang 550014, China
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7
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Gao QC, Li YF, Xuan J, Hu XQ. Practical synthesis of isocoumarins via Rh(III)-catalyzed C-H activation/annulation cascade. Beilstein J Org Chem 2023; 19:100-106. [PMID: 36761471 PMCID: PMC9907013 DOI: 10.3762/bjoc.19.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 01/16/2023] [Indexed: 01/31/2023] Open
Abstract
Herein, we report an unprecedented Rh(III)-catalyzed C-H activation/annulation cascade of readily available enaminones with iodonium ylides towards the convenient synthesis of isocoumarins. This coupling system proceeds in useful chemical yields (up to 93%) via a cascade C-H activation, Rh-carbenoid migratory insertion and acid-promoted intramolecular annulation. The success of gram-scale reaction and diverse functionalization of isocoumarins demonstrated the synthetic utility of this protocol.
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Affiliation(s)
- Qian-Ci Gao
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, People’s Republic of China
| | - Yi-Fei Li
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, People’s Republic of China
| | - Jun Xuan
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, College of Chemistry & Chemical Engineering, Anhui University, Hefei, Anhui 230601, People’s Republic of China
| | - Xiao-Qiang Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, People’s Republic of China
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8
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Li KY, Zhu QF, Ao JL, Wang FR, Long XM, Liao SG, Xu GB. New Meroterpenoid and Isocoumarins from the Fungus Talaromyces amestolkiae MST1-15 Collected from Coal Area. Molecules 2022; 27. [PMID: 36500326 DOI: 10.3390/molecules27238223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
Three new compounds including a meroterpenoid (1) and two isocoumarins (8 and 9), together with thirteen known compounds (2-7, 10-16) were isolated from the metabolites of Talaromyces amestolkiae MST1-15. Their structures were identified by a combination of spectroscopic analysis. The absolute configuration of compound 1 was elucidated on the basis of experimental and electronic circular dichroism calculation, and compounds 8 and 9 were determined by Mo2(OAc)4-induced circular dichroism experiments. Compounds 7-16 showed weak antibacterial activities against Stenotrophomonas maltophilia with MIC values ranging from 128 to 512 μg/mL (MICs of ceftriaxone sodium and levofloxacin were 128 and 0.25 μg/mL, respectively).
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9
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Aloia A, Casiello M, D'Accolti L, Fusco C, Nacci A, Monopoli A. Direct Synthesis of 3-Aryl Substituted Isocoumarins and Phthalides through Palladium Acetate Catalyzed C(sp 2 )-H Activation in Ionic Liquids. Chemistry 2022; 28:e202202350. [PMID: 35997238 PMCID: PMC9826210 DOI: 10.1002/chem.202202350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Indexed: 01/11/2023]
Abstract
A novel Pd-catalysed oxidative coupling between benzoic acids and vinylarenes or acrylates to furnish isocoumarins and phthalides is reported. The reaction proceeds smoothly in molten tetrabutylammonium acetate via a selective C-H bond activation, with very low percentage of ligand-free palladium acetate as the catalyst, under atmospheric pressure of oxygen. Sub-stoichiometric amount of copper acetate is also required as a reoxidant for the palladium.
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Affiliation(s)
- Andrea Aloia
- Chemistry DepartmentUniversità degli Studi di Bari Aldo MoroVia Orabona 470126BariItaly
| | - Michele Casiello
- Chemistry DepartmentUniversità degli Studi di Bari Aldo MoroVia Orabona 470126BariItaly
| | - Lucia D'Accolti
- Chemistry DepartmentUniversità degli Studi di Bari Aldo MoroVia Orabona 470126BariItaly,CNR – Istituto di Chimica dei Composti Organometallici (ICCOM) Bari SectionConsiglio Nazionale delle RicercheVia Orabona 470126BariItaly
| | - Caterina Fusco
- CNR – Istituto di Chimica dei Composti Organometallici (ICCOM) Bari SectionConsiglio Nazionale delle RicercheVia Orabona 470126BariItaly
| | - Angelo Nacci
- Chemistry DepartmentUniversità degli Studi di Bari Aldo MoroVia Orabona 470126BariItaly,CNR – Istituto di Chimica dei Composti Organometallici (ICCOM) Bari SectionConsiglio Nazionale delle RicercheVia Orabona 470126BariItaly
| | - Antonio Monopoli
- Chemistry DepartmentUniversità degli Studi di Bari Aldo MoroVia Orabona 470126BariItaly,CNR – Istituto di Chimica dei Composti Organometallici (ICCOM) Bari SectionConsiglio Nazionale delle RicercheVia Orabona 470126BariItaly
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10
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Machado FP, Rodrigues IC, Gales L, Pereira JA, Costa PM, Dethoup T, Mistry S, Silva AMS, Vasconcelos V, Kijjoa A. New Alkylpyridinium Anthraquinone, Isocoumarin, C-Glucosyl Resorcinol Derivative and Prenylated Pyranoxanthones from the Culture of a Marine Sponge-Associated Fungus, Aspergillus stellatus KUFA 2017. Mar Drugs 2022; 20:672. [PMID: 36354995 PMCID: PMC9696483 DOI: 10.3390/md20110672] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 03/09/2024] Open
Abstract
An unreported isocoumarin, (3S,4R)-4-hydroxy-6-methoxymellein (2), an undescribed propylpyridinium anthraquinone (4), and an unreported C-glucosyl resorcinol derivative, acetyl carnemycin E (5c), were isolated, together with eight previously reported metabolites including p-hydroxybenzaldehyde (1), 1,3-dimethoxy-8-hydroxy-6-methylanthraquinone (3a), 1,3-dimethoxy-2,8-dihydroxy-6-methylanthraquinone (3b), emodin (3c), 5[(3E,5E)-nona-3,5-dien-1-yl]benzene (5a), carnemycin E (5b), tajixanthone hydrate (6a) and 15-acetyl tajixanthone hydrate (6b), from the ethyl acetate extract of the culture of a marine sponge-derived fungus, Aspergillus stellatus KUFA 2017. The structures of the undescribed compounds were elucidated by 1D and 2D NMR and high resolution mass spectral analyses. In the case of 2, the absolute configurations of the stereogenic carbons were determined by comparison of their calculated and experimental electronic circular dichroism (ECD) spectra. The absolute configurations of the stereogenic carbons in 6a and 6b were also determined, for the first time, by X-ray crystallographic analysis. Compounds 2, 3a, 3b, 4, 5a, 5b, 5c, 6a, and 6b were assayed for antibacterial activity against four reference strains, viz. two Gram-positive (Staphylococcus aureus ATCC 29213, Enterococcus faecalis ATCC 29212) and two Gram-negative (Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853), as well as three multidrug-resistant strains. However, only 5a exhibited significant antibacterial activity against both reference and multidrug-resistant strains. Compound 5a also showed antibiofilm activity against both reference strains of Gram-positive bacteria.
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Affiliation(s)
- Fátima P. Machado
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
| | - Inês C. Rodrigues
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Luís Gales
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- Instituto de Biologia Molecular e Celular (i3S-IBMC), Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - José A. Pereira
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
| | - Paulo M. Costa
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
| | - Tida Dethoup
- Department of Plant Pathology, Faculty of Agriculture, Kasetsart University, Bangkok 10240, Thailand
| | - Sharad Mistry
- Department of Chemistry, University of Leicester, University Road, Leicester LE 7 RH, UK
| | - Artur M. S. Silva
- Departamento de Química & QOPNA, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
- FCUP-Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - Anake Kijjoa
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
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11
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Zeng WN, Cai J, Wang B, Chen LY, Pan CX, Chen SJ, Huang GL, Zheng CJ. A new bioactive isocoumarin from the mangrove-derived fungus Penicillium sp. TGM112. J Asian Nat Prod Res 2022; 24:679-684. [PMID: 34292113 DOI: 10.1080/10286020.2021.1952188] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
A new isocoumarin, penicimarin N (1), along with five known compounds (2-6), were isolated from the mangrove-derived fungus Penicillium sp. TGM112. The structure of 1 was elucidated on the basis of extensive spectroscopic data analysis, and the absolute configuration of 1 was determined by comparison of their circular dichroism (CD) spectra with the literature. The structures of known compounds were determined by comparison with the literature data. All the isolated compounds were examined for their antioxidant and α-glucosidase activities. Compound 1 showed strong antioxidant activity with the IC50 value of 1.0 mM, and 1 also exhibited moderate inhibitory activity against α-glucosidase with the IC50 value of 620 μM.
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Affiliation(s)
- Wei-Nv Zeng
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Jin Cai
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Bin Wang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Liang-Yu Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Chen-Xin Pan
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Shi-Ji Chen
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Guo-Lei Huang
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
| | - Cai-Juan Zheng
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
- Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province, Haikou 571158, China
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Sukandar ER, Kaennakam S, Raab P, Nöst X, Rassamee K, Bauer R, Siripong P, Ersam T, Tip-Pyang S, Chavasiri W. Cytotoxic and Anti-Inflammatory Activities of Dihydro isocoumarin and Xanthone Derivatives from Garcinia picrorhiza. Molecules 2021; 26:6626. [PMID: 34771035 DOI: 10.3390/molecules26216626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/03/2021] [Accepted: 10/08/2021] [Indexed: 11/17/2022] Open
Abstract
Garcinia picrorhiza, a woody plant native to Sulawesi and Maluku Islands, Indonesia, has been traditionally used as a wound healing ointment. In our continuous search for bioactive compounds from this plant, 15 phenolic compounds were isolated from its stem bark, including a previously undescribed dihydroisocoumarin, 2'-hydroxyannulatomarin, and two undescribed furanoxanthones, gerontoxanthone C hydrate and 3'-hydroxycalothorexanthone. The structures of the new metabolites were elucidated on the basis of spectroscopic analysis, including 1D and 2D NMR and HRESIMS. Gerontoxanthone C hydrate possessed cytotoxicity against four cancer cells (KB, HeLa S3, MCF-7, and Hep G2) with IC50 values ranging from 5.6 to 7.5 µM. Investigation on the anti-inflammatory activities showed that 3'-hydroxycalothorexanthone inhibited NO production in RAW 264.7 and BV-2 cell lines with IC50 values of 16.4 and 13.8 µM, respectively, whereas only (-)-annulatomarin possessed inhibition activity on COX-2 enzyme over 10% at 20 µM. This work describes the presence of 3,4-dihydroisocoumarin structures with a phenyl ring substituent at C-3, which are reported the first time in genus Garcinia. These findings also suggest the potential of furanxanthone derivatives as cytotoxic and anti-inflammatory agents for further pharmacological studies.
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Abstract
Inflammatory bowel disease (IBD) is a non-communicable disease characterized by a chronic inflammatory process of the gut and categorized into Crohn’s disease and ulcerative colitis, both currently without definitive pharmacological treatment and cure. The unclear etiology of IBD is a limiting factor for the development of new drugs and explains the high frequency of refractory patients to current drugs, which are also related to various adverse effects, mainly after long-term use. Dissatisfaction with current therapies has promoted an increased interest in new pharmacological approaches using natural products. Coumarins comprise a large class of natural phenolic compounds found in fungi, bacteria, and plants. Coumarin and its derivatives have been reported as antioxidant and anti-inflammatory compounds, potentially useful as complementary therapy of the IBD. These compounds produce protective effects in intestinal inflammation through different mechanisms and signaling pathways, mainly modulating immune and inflammatory responses, and protecting against oxidative stress, a central factor for IBD development. In this review, we described the main coumarin derivatives reported as intestinal anti-inflammatory products and its available pharmacodynamic data that support the protective effects of these products in the acute and subchronic phase of intestinal inflammation.
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Affiliation(s)
- Luiz C Di Stasi
- Laboratory of Phytomedicines, Pharmacology, and Biotechnology (PhytoPharmaTech), Department of Biophysics and Pharmacology, Institute of Biosciences, São Paulo State University (UNESP), 18618-689 Botucatu, SP, Brazil
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Tiouabi M, Tabacchi R, Stoeckli-Evans H. Crystal structures and Hirshfeld surface analyses of 6,8-dimeth-oxy-3-methyl-1 H-isochromen-1-one and 5-bromo-6,8-dimeth-oxy-3-methyl-1 H-isochromen-1-one chloro-form monosolvate. Acta Crystallogr E Crystallogr Commun 2020; 76:1107-1112. [PMID: 32695461 PMCID: PMC7336779 DOI: 10.1107/s2056989020007975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 06/14/2020] [Indexed: 11/10/2022]
Abstract
In the mol-ecule of 6,8-dimeth-oxy-3-methyl-1H-isochromen-1-one, C12H12O4, (I), the two meth-oxy groups are directed anti with respect to each other. In the mol-ecule of the brom-inated derivative, 5-bromo-6,8-dimeth-oxy-3-methyl-1H-isochromen-1-one, that crystallized as a chloro-form monosolvate, C12H11BrO4·CHCl3, (II·CHCl3 ), the meth-oxy groups are directed syn to each other. In the crystal of I, mol-ecules are linked by bifurcated C-H⋯O hydrogen bonds, forming chains along the c-axis direction. The chains are linked by C-H⋯π inter-actions, forming a supra-molecular framework. In the crystal of II·CHCl3 , mol-ecules are linked by C-H⋯O hydrogen bonds forming 21 helices parallel to the b-axis direction. The chloro-form solvate mol-ecules are linked to the helices by C-H⋯O(carbon-yl) hydrogen bonds. The helices stack up the c-axis direction and are linked by offset π-π inter-actions [inter-centroid distance = 3.517 (3) Å], forming layers parallel to the (100) plane. Compound II·CHCl3 was refined as a two-component twin. Two chlorine atoms of the chloro-form solvate are disordered over two positions and were refined with a fixed occupancy ratio of 0.5:0.5.
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Affiliation(s)
- Mustapha Tiouabi
- Institute of Chemistry, University of Neuchâtel, Av. de Bellevax 51, CH-2000 Neuchâtel, Switzerland
| | - Raphaël Tabacchi
- Institute of Chemistry, University of Neuchâtel, Av. de Bellevax 51, CH-2000 Neuchâtel, Switzerland
| | - Helen Stoeckli-Evans
- Institute of Physics, University of Neuchâtel, rue Emile-Argand 11, CH-2000 Neuchâtel, Switzerland
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Tiouabi M, Tabacchi R, Stoeckli-Evans H. The crystal structure, Hirshfeld surface analysis and energy frameworks of 2-[2-(meth-oxy-carbon-yl)-3,6-bis-(meth-oxy-meth-oxy)phen-yl]acetic acid. Acta Crystallogr E Crystallogr Commun 2020; 76:1101-1106. [PMID: 32695460 PMCID: PMC7336770 DOI: 10.1107/s2056989020007987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 06/15/2020] [Indexed: 11/22/2022]
Abstract
In the title compound, C14H18O8, (I), the meth-oxy-carbonyl [-C(=O)OCH3] and the acetic acid [-CH2C(=O)OH] groups are inclined to the benzene ring by 79.24 (11) and 76.71 (13)°, respectively, and are normal to each other with a dihedral angle of 90.00 (13)°. In the crystal, mol-ecules are linked by a pair of O-H⋯O hydrogen bonds forming the familiar acetic acid inversion dimer. The dimers are linked by two C-H⋯O hydrogen bonds and an offset π-π inter-action [inter-centroid distance = 3.6405 (14) Å], forming layers lying parallel to the (10) plane. The layers are linked by a third C-H⋯O hydrogen bond and a C-H⋯π inter-action to form a supra-molecular framework.
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Affiliation(s)
- Mustapha Tiouabi
- Institute of Chemistry, University of Neuchâtel, Av. de Bellevax 51, CH-2000 Neuchâtel, Switzerland
| | - Raphaël Tabacchi
- Institute of Chemistry, University of Neuchâtel, Av. de Bellevax 51, CH-2000 Neuchâtel, Switzerland
| | - Helen Stoeckli-Evans
- Institute of Physics, University of Neuchâtel, rue Emile-Argand 11, CH-2000 Neuchâtel, Switzerland
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Park MJ, Kang YH. Isolation of Isocoumarins and Flavonoids as α-Glucosidase Inhibitors from Agrimonia pilosa L. Molecules 2020; 25:E2572. [PMID: 32486502 DOI: 10.3390/molecules25112572] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/27/2020] [Accepted: 05/27/2020] [Indexed: 11/16/2022] Open
Abstract
Agrimonia pilosa L. (AP) showed potent α-glucosidase inhibitory (AGI) activity, but it is uncertain what phytochemicals play a key factor. The phytochemical study of AP based on AGI activity led to the isolation of four isocoumarins; agrimonolide (1), agrimonolide-6-O-β-d-glucopyranoside (2), desmethylagrimonolide (3), desmethylagrimonolide-6-O-β-d-glucopyranoside (4), and four flavonoids; luteolin (5), quercetin (6), vitexin (7), and isovitexin (8). The four isocoumarins were isolated as α-glucosidase inhibitors for the first time. Isocoumarins, compound 1 (agrimonolide) and 3 (desmethylagrimonolide) showed strong α-glucosidase inhibitory activities with IC50 values of 24.2 and 37.4 µM, respectively. Meanwhile, isocoumarin and flavonoid glycosides showed weak AGI activity. In the kinetic analysis, isocoumarins, compounds 1 and 3 showed non-competitive inhibition, whereas flavonoid, compound 6 showed competitive inhibition.
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Jiang JS, Li FS, Feng ZM, Yang YN, Zhang PC. New phenolic glycosides from Polygonum cuspidatum. J Asian Nat Prod Res 2020; 22:17-23. [PMID: 31389260 DOI: 10.1080/10286020.2019.1646730] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/16/2019] [Accepted: 07/16/2019] [Indexed: 06/10/2023]
Abstract
Two new isobenzofuranone derivatives, polyphthaliside A (1) and polyphthaliside B (2), and a new isocoumarin derivative, polyisocoumarin (3), were isolated from Polygonum cuspidatum. Their structures were elucidated by detailed spectroscopic analysis and chemical methods. The cytotoxicity activity and PTP1B inhibitory activity of compounds 1-3 were estimated and none of them exhibited activities at a concentration of 10 μM.
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Affiliation(s)
- Jian-Shuang Jiang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Fu-Shuang Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zi-Ming Feng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Ya-Nan Yang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Pei-Cheng Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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18
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Lai D, Li J, Zhao S, Gu G, Gong X, Proksch P, Zhou L. Chromone and isocoumarin derivatives from the endophytic fungus Xylomelasma sp. Samif07, and their antibacterial and antioxidant activities. Nat Prod Res 2019; 35:4616-4620. [PMID: 31782665 DOI: 10.1080/14786419.2019.1696333] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Five chromone derivatives, including 2,6-dimethyl-5-methoxyl-7-hydroxylchromone (1), 6-hydroxymethyleugenin (2), 6-methoxymethyleugenin (3), chaetoquadrin D (4), and isoeugenitol (5), and three isocoumarin congeners, namely diaporthin (6), 8-hydroxy-6-methoxy-3-methylisocoumarin (7), and 6-methoxymellein (8), were isolated from the culture of the endophytic fungus Xylomelasma sp. Samif07 derived from the medicinal plant Salvia miltiorrhiza Bunge. Among them, compound 1 was a new natural product. Their structures were determined by spectroscopic methods and comparison with the literature. The isolated compounds were evaluated for their antibacterial and antioxidant activities. Compound 5 showed notable antitubercular activity against Mycobacterium tuberculosis with MIC value of 10.31 µg/mL, while compounds 1-3, and 5-7 displayed inhibitory activities against the other bacteria with MIC range of 25 ∼ 100 µg/mL. Meanwhile, compound 6 showed potent hydroxyl radical-scavenging activity with EC50 value of 15.1 µg/mL, while compounds 5-7 showed certain ferric reducing ability.
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Affiliation(s)
- Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Jing Li
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Siji Zhao
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Gan Gu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Xiao Gong
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine University, DüSseldorf, Germany
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing, China
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Zhang Y, Yan G, Sun C, Nan L, Wang X, Xu W, Chu K. Compound GDC, an Isocoumarin Glycoside, Protects against LPS-Induced Inflammation and Potential Mechanisms In Vitro. Inflammation 2019; 42:506-515. [PMID: 30328549 DOI: 10.1007/s10753-018-0908-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Compound 3R-(4'-hydroxyl-3'-O-β-D-glucopyranosyl phenyl)-dihydro isocoumarin (GDC) is a natural isocoumarin, recently isolated from the stems of H. paniculiflorum. However, we know little about the effects of GDC on rheumatoid arthritis (RA). This study aims to investigate the protective effects and potential mechanisms of GDC against LPS-induced inflammation in vitro. Fibroblast-like synoviocytes (FLSs) obtained from synovial tissue of rats were induced by lipopolysaccharide (LPS) and treated with GDC. Cell viability was determined by mitochondrial-respiration-dependent3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium (MTT) assay. Secretion of various inflammatory mediators was analyzed by ELISA and RayBio® Rat Cytokine Antibody Array. Potential mechanisms that are associated with anti-inflammatory effect were examined by Western blot. Results showed that GDC significantly inhibited the production of tumor necrosis factor alpha (TNF-α) and interleukin- (IL-) 6 induced by LPS. GDC also reduced the expression of inducible nitric oxide synthase (iNOS), TNF-α, IL-6, and IL-1β, as well as proinflammatory cytokines such as activin A, ciliary neurotrophic factor (CNTF), fractalkine, IFN-γ, IL-4, and TIMP-1. Moreover, GDC inhibited LPS-induced phosphorylation of extracellular regulated protein kinases (ERK1/2), p38 mitogen-activated protein kinases (p38), c-Jun N-terminal kinase (JNK), and IκB. And GDC also blocked NF-κBp65 nuclear translocation. All the results suggested that the protective effects of GDC against LPS-induced inflammation in vitro may be related with NF-κB and JNK signaling pathway.
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Affiliation(s)
- Yuqin Zhang
- Pharmacy College of Fujian University of Traditional Chinese Medicine, Shangjie Minhou, Fuzhou, Fujian, People's Republic of China.,Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, Hainan Normal University, Haikou, People's Republic of China.,State Key Laboratory of Chinese Pharmacies of Fujian Provincial Department of Science and Technology of Fujian University of Traditional Chinese Medicine, No. 1 Qiuyang Road, Shangjie Minhou, Fuzhou, Fujian, 350122, People's Republic of China
| | - Guohong Yan
- People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Bayiqi Road, Fuzhou, Fujian, People's Republic of China
| | - Chengtao Sun
- Pharmacy College of Fujian University of Traditional Chinese Medicine, Shangjie Minhou, Fuzhou, Fujian, People's Republic of China.,State Key Laboratory of Chinese Pharmacies of Fujian Provincial Department of Science and Technology of Fujian University of Traditional Chinese Medicine, No. 1 Qiuyang Road, Shangjie Minhou, Fuzhou, Fujian, 350122, People's Republic of China
| | - Lihong Nan
- Pharmacy College of Fujian University of Traditional Chinese Medicine, Shangjie Minhou, Fuzhou, Fujian, People's Republic of China.,State Key Laboratory of Chinese Pharmacies of Fujian Provincial Department of Science and Technology of Fujian University of Traditional Chinese Medicine, No. 1 Qiuyang Road, Shangjie Minhou, Fuzhou, Fujian, 350122, People's Republic of China
| | - Xiaoying Wang
- Pharmacy College of Fujian University of Traditional Chinese Medicine, Shangjie Minhou, Fuzhou, Fujian, People's Republic of China.,State Key Laboratory of Chinese Pharmacies of Fujian Provincial Department of Science and Technology of Fujian University of Traditional Chinese Medicine, No. 1 Qiuyang Road, Shangjie Minhou, Fuzhou, Fujian, 350122, People's Republic of China
| | - Wei Xu
- Pharmacy College of Fujian University of Traditional Chinese Medicine, Shangjie Minhou, Fuzhou, Fujian, People's Republic of China. .,State Key Laboratory of Chinese Pharmacies of Fujian Provincial Department of Science and Technology of Fujian University of Traditional Chinese Medicine, No. 1 Qiuyang Road, Shangjie Minhou, Fuzhou, Fujian, 350122, People's Republic of China.
| | - Kedan Chu
- Pharmacy College of Fujian University of Traditional Chinese Medicine, Shangjie Minhou, Fuzhou, Fujian, People's Republic of China. .,State Key Laboratory of Chinese Pharmacies of Fujian Provincial Department of Science and Technology of Fujian University of Traditional Chinese Medicine, No. 1 Qiuyang Road, Shangjie Minhou, Fuzhou, Fujian, 350122, People's Republic of China.
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20
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Dong YJ, Hou GM, Lin B, Li DY, Li ZL. Three new polyketides from Ascotricha sp. ZJ-M-5 by the OSMAC strategy. J Asian Nat Prod Res 2019; 21:689-695. [PMID: 29781301 DOI: 10.1080/10286020.2018.1471066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
Three new compounds, ascotrichols A-B (1-2) and ascotrichrone A (3), along with two known isocoumarin derivatives (4-5), were isolated from the solid culture of a sea mud-derived fungus, Ascotricha sp. ZJ-M-5 on rice media. The structures were elucidated by extensive spectroscopic analyses, including 1D and 2D NMR data, and the absolute configurations were determined by electronic circular dichroism and biogenetic correlation.
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Affiliation(s)
- Ya-Jing Dong
- a Key Laboratory of Structure-Based Drug Design & Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Guo-Mei Hou
- a Key Laboratory of Structure-Based Drug Design & Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Bin Lin
- c School of Pharmaceutical Engineering , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Dan-Yi Li
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Zhan-Lin Li
- a Key Laboratory of Structure-Based Drug Design & Discovery (Shenyang Pharmaceutical University), Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
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21
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Ding Z, Tao T, Wang L, Zhao Y, Huang H, Zhang D, Liu M, Wang Z, Han J. Bioprospecting of Novel and Bioactive Metabolites from Endophytic Fungi Isolated from Rubber Tree Ficus elastica Leaves. J Microbiol Biotechnol 2019; 29:731-738. [PMID: 31030449 DOI: 10.4014/jmb.1901.01015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Endophytic fungi are an important component of plant microbiota, and have the excellent capacity for producing a broad variety of bioactive metabolites. These bioactive metabolites not only affect the survival of the host plant, but also provide valuable lead compounds for novel drug discovery. In this study, forty-two endophytic filamentous fungi were isolated from Ficus elastica leaves, and further identified as seven individual taxa by ITS-rDNA sequencing. The antimicrobial activity of these endophytic fungi was evaluated against five pathogenic microorganisms. Two strains, Fes1711 (Penicillium funiculosum) and Fes1712 (Trichoderma harzianum), displayed broad-spectrum bioactivities. Our following study emphasizes the isolation, identification and bioactivity testing of chemical metabolites produced by T. harzianum Fes1712. Two new isocoumarin derivatives (1 and 2), together with three known compounds (3-5) were isolated, and their structures were elucidated using NMR and MS. Compounds 1 and 2 exhibited inhibitory activity against Escherichia coli. Our findings reveal that endophytic fungi from the rubber tree F. elastica leaves exhibit unique characteristics and are potential producers of novel natural bioactive products.
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Affiliation(s)
- Zhuang Ding
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Tao Tao
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Lili Wang
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Yanna Zhao
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Huiming Huang
- School of Life Sciences, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Demeng Zhang
- State Key Laboratory of Bioactive Seaweed Substances, Qingdao Bright Moon Seaweed Group Co. Ltd., Qingdao, 266400, P.R. China
| | - Min Liu
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Zhengping Wang
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, 252059, P.R. China
| | - Jun Han
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng, 252059, P.R. China
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Abstract
Two new β-carboline alkaloids, aspergillspins A-B (1-2), three new quinolone alkaloids, aspergillspins C-E (3-5), and two new isocoumarins, aspergillspins F-G (6-7), together with four known alkaloids were isolated from the marine gorgonian-derived fungus Aspergillus sp. SCSIO 41501. Their structures were identified by spectroscopic analysis, and the absolute configurations of several chiral carbons in 2 and 3 were further established by quantum chemical calculations of the electronic circular dichroism (ECD) spectra. Their cytotoxic and antibacterial activities were also evaluated.
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Affiliation(s)
- Xuan Ma
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology Chinese Academy of Sciences, Guangzhou, China
| | - Xiao Liang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology Chinese Academy of Sciences, Guangzhou, China.,University of the Chinese Academy of Sciences, Beijing, China
| | - Zhong-Hui Huang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology Chinese Academy of Sciences, Guangzhou, China
| | - Shu-Hua Qi
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology Chinese Academy of Sciences, Guangzhou, China
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Wu Z, Chen J, Zhang X, Chen Z, Li T, She Z, Ding W, Li C. Four New Isocoumarins and a New Natural Tryptamine with Antifungal Activities from a Mangrove Endophytic Fungus Botryosphaeria ramosa L29. Mar Drugs 2019; 17:E88. [PMID: 30717119 DOI: 10.3390/md17020088] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/18/2019] [Accepted: 01/22/2019] [Indexed: 01/25/2023] Open
Abstract
Four new isocoumarin derivatives, botryospyrones A (1), B (2), C (3), and D (4), and a new natural tryptamine, (3aS, 8aS)-1-acetyl-1, 2, 3, 3a, 8, 8a-hexahydropyrrolo [2,3b] indol-3a-ol (5), were isolated from a marine mangrove endophytic fungus Botryosphaeria ramosa L29, obtained from the leaf of Myoporum bontioides. Their structures were elucidated using spectroscopic analysis. The absolute configurations of compounds 3, 4, and 5 were determined by comparison of their circular dichroism (CD) spectra with the calculated data. The inhibitory activities of compound 1 on Fusarium oxysporum, of compounds 2 and 3 on F. oxysporum and Fusarium graminearum, and of compound 5 on F. oxysporum, Penicillium italicum, and F. graminearum were higher than those of triadimefon, widely used as an agricultural fungicide. Compound 5 was produced after using the strategy we called "using inhibitory stress from components of the host" (UISCH), wherein (2R, 3R)-3, 5, 7-trihydroxyflavanone 3-acetate, a component of M. bontioides with weak growth inhibitory activity towards B. ramosa L29, was introduced into the culture medium.
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Chen Y, Liu Z, Liu H, Pan Y, Li J, Liu L, She Z. Dichloroisocoumarins with Potential Anti-Inflammatory Activity from the Mangrove Endophytic Fungus Ascomycota sp. CYSK-4. Mar Drugs 2018; 16:md16020054. [PMID: 29425114 PMCID: PMC5852482 DOI: 10.3390/md16020054] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/26/2018] [Accepted: 02/02/2018] [Indexed: 02/02/2023] Open
Abstract
Three new isocoumarins—dichlorodiaportintone (1), desmethyldichlorodiaportintone (2) and desmethyldichlorodiaportinol (3)—as well as six known analogues (4–9) were isolated from the culture of the mangrove endophytic fungus Ascomycota sp. CYSK-4 from Pluchea indica. Their structures were elucidated by analysis of spectroscopic data. The absolute configuration of compounds 1 and 2 were determined by the modified Mosher’s method. Compound 2 showed significant anti-inflammatory activity by inhibiting the production of NO in LPS-induced RAW 264.7 cells with IC50 value of 15.8 μM, while compounds 1, 5, and 6 exhibited weak activities with IC50 values of 41.5, 33.6, and 67.2 μM, respectively. In addition, compounds 1, 5, and 6 showed antibacterial effects against Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Klebsiella pneumoniae, and Acinetobacter calcoaceticus with the MIC values in the range of 25–50 μg·mL−1.
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Affiliation(s)
- Yan Chen
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| | - Zhaoming Liu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Hongju Liu
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Yahong Pan
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Jing Li
- School of Pharmacy, Guangdong Medical University, Dongguan 523808, China.
| | - Lan Liu
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China.
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Zhigang She
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China.
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Sun Yat-Sen University, Guangzhou 510275, China.
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Meepagala KM, Briscoe WE, Techen N, Johnson RD, Clausen BM, Duke SO. Isolation of a phytotoxic isocoumarin from Diaporthe eres-infected Hedera helix (English ivy) and synthesis of its phytotoxic analogs. Pest Manag Sci 2018; 74:37-45. [PMID: 28834621 DOI: 10.1002/ps.4712] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 08/01/2017] [Accepted: 08/17/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND The fungus Diaporthe eres was isolated from a fungal pathogen-infected leaf of Hedera helix (English ivy) exhibiting necrosis. It is hypothesized that the causative fungus produces phytotoxins as evidenced by necrotic lesions on the leaves. RESULTS The fungus was isolated and grown in Czapek Dox broth culture medium and potato dextrose broth culture medium and identified as Diaporthe eres. The ethyl acetate extracts of the culture broths were phytotoxic to lettuce (Lactuca sativa) and bentgrass (Agrostis stolonifera). 3,4-Dihydro-8-hydroxy-3,5-dimethylisocoumarin (1) and tyrosol (2) were isolated and identified as the phytotoxic constituents. Six analogs of 3,4-dihydro-isocoumarin were synthesized and shown to be phytotoxic. The synthesized 3,4-dihydro-8-hydroxy-3,7-dimethylisocoumarin and 3,4-dihydro-8-hydroxy-3,3,7-trimethylisocoumarin were two- to three-fold more phytotoxic than the naturally occurring 1 in a Lemna paucicostata growth bioassay. CONCLUSION Synthesis and herbicidal activities of the several new analogs of 1 are reported for the first time. These promising molecules should be used as templates for synthesis and testing of more analogs. © 2017 Society of Chemical Industry.
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Affiliation(s)
| | | | - Natascha Techen
- National Center for Natural Products Research, University, MS, USA
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Zheng W, Ji YB, Li WL, Dong J, Chen N, Yu XF, Wu J, Zhao D, Xiang Z. A pair of new isocoumarin epimers from soil fungus Hypoxylon sp. J Asian Nat Prod Res 2017; 19:993-999. [PMID: 28671852 DOI: 10.1080/10286020.2017.1347159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/22/2017] [Indexed: 06/07/2023]
Abstract
In our research on novel secondary metabolites from micro-organisms, two new (1-2) and four known dihydroisocoumarins (3-6) were derived from soil fungus Hypoxylon sp. Their structures were determined with extensive NMR data analysis and ECD calculation comparing with those of experimental CD spectra. Interestingly, compounds 1 and 2 possessed the same planar structure and very similar NMR data, suggesting 1 and 2 were a pair of epimers at either C-3 or at C-4, confirmed by the totally opposite cotton effect around 250 nm in the CD spectra of 1 and 2. Moreover, for the first time, we revealed that the CD absorption peak at 250 nm was dominated by C-3 orientation, rather than the orientation of C-3 substituents, by intensive ECD investigations.
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Affiliation(s)
- Wei Zheng
- a Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce , Harbin 150076 , China
| | - Yu-Bin Ji
- a Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce , Harbin 150076 , China
| | - Wen-Lan Li
- b School of Pharmacy, Harbin University of Commerce , Harbin 150076 , China
| | - Jing Dong
- c Light Industry Institute, Harbin University of Commerce , Harbin 150028 , China
| | - Ning Chen
- a Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce , Harbin 150076 , China
| | - Xue-Fei Yu
- a Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce , Harbin 150076 , China
| | - Jian Wu
- a Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce , Harbin 150076 , China
| | - Dan Zhao
- d College of Food Engineering, Harbin University of Commerce , Harbin 150076 , China
| | - Zheng Xiang
- a Research Center on Life Sciences and Environmental Sciences, Harbin University of Commerce , Harbin 150076 , China
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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: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Damasceno JPL, Rodrigues RP, Gonçalves RDCR, Kitagawa RR. Anti-Helicobacter pylori Activity of Isocoumarin Paepalantine: Morphological and Molecular Docking Analysis. Molecules 2017; 22:molecules22050786. [PMID: 28498343 PMCID: PMC6154667 DOI: 10.3390/molecules22050786] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 04/29/2017] [Accepted: 05/03/2017] [Indexed: 02/07/2023] Open
Abstract
The Helicobacterpylori bacterium is one of the main causes of chronic gastritis, peptic ulcers, and even gastric cancer. It affects an average of half of the world population. Its difficult eradication depends upon multi-drug therapy. Since its classification as a group 1 carcinogenic by International Agency for Research on Cancer (IARC), the importance of H. pylori eradication has obtained a novel meaning. There is considerable interest in alternative therapies for the eradication of H. pylori using compounds from a wide range of natural products. In the present study, we investigated the antibacterial property of the isocoumarin paepalantine against H. pylori and it exhibited significant anti-H. pylori activity at a minimum inhibitory concentration (MIC) of 128 μg/mL and at a minimum bactericidal concentration (MBC) of 256 μg/mL. The scanning electron microscopy (SEM) revealed significant morphological changes of the bacterial cell as a response to a sub-MIC of paepalantine, suggesting a penicillin-binding protein (PBP) inhibition. Computational studies were carried out in order to study binding modes for paepalantine in PBP binding sites, exploring the active and allosteric sites. The data from the present study indicates that paepalantine exhibits significant anti-H. pylori activity, most likely by inhibiting membrane protein synthesis.
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Affiliation(s)
- João Paulo L Damasceno
- Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo-UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil.
| | - Ricardo P Rodrigues
- Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo-UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil.
| | - Rita de Cássia R Gonçalves
- Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo-UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil.
- Department of Pharmaceutical Sciences, Federal University of Espirito Santo-UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil.
| | - Rodrigo R Kitagawa
- Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo-UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil.
- Department of Pharmaceutical Sciences, Federal University of Espirito Santo-UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil.
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Sang XN, Chen SF, An X, Chen G, Wang HF, Pei YH. A novel 3,4-dihydronaphthalen-1(2H)-one with spiro-butyrolactone and a new isocoumarin isolated from the endophytic fungus Phoma sp. YN02-P-3. J Asian Nat Prod Res 2017; 19:436-443. [PMID: 27602792 DOI: 10.1080/10286020.2016.1217521] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 07/24/2016] [Indexed: 06/06/2023]
Abstract
A novel 3,4-dihydronaphthalen-1(2H)-one with spiro-butyrolactone phomol (1) and a new isocoumarin phomasatin (2), together with two known compounds (3-4) were isolated from the solid culture of the endophytic fungus Phoma sp. YN02-P-3. Their structures including the absolute configurations were characterized on the basis of extensive 1D, 2D NMR (HSQC, HMBC, NOESY), MS, and CD spectral data. Compound 1 showed selective cytotoxic activity against HL-60 cell line with the IC50 value of 29.05 μM.
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Affiliation(s)
- Xia-Nan Sang
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Shao-Fei Chen
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Xiao An
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Gang Chen
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Hai-Feng Wang
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Yue-Hu Pei
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
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30
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Lei H, Lin X, Han L, Ma J, Ma Q, Zhong J, Liu Y, Sun T, Wang J, Huang X. New Metabolites and Bioactive Chlorinated Benzophenone Derivatives Produced by a Marine-Derived Fungus Pestalotiopsis heterocornis. Mar Drugs 2017; 15:E69. [PMID: 28335391 PMCID: PMC5367026 DOI: 10.3390/md15030069] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/19/2017] [Accepted: 03/03/2017] [Indexed: 01/06/2023] Open
Abstract
Four new compounds, including two isocoumarins, pestaloisocoumarins A and B (1, 2), one sesquiterpenoid degradation, isopolisin B (4), and one furan derivative, pestalotiol A (5), together with one known isocoumarin, gamahorin (3), and three chlorinated benzophenone derivatives, pestalachloride B (6), pestalachloride E (7) and a mixture of pestalalactone atropisomers (8a/8b), were isolated from a culture of the fungus Pestalotiopsis heterocornis associated with sponge Phakellia fusca. These new chemical structures were established using NMR and MS spectroscopic data, as well as single-crystal X-ray crystallographic analysis and CD Cotton effects. All of the isolated compounds were evaluated for their antimicrobial and cytotoxic activities. Isocoumarins 1-3, showed antibacterial activities against Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis with MIC values ranging from 25 to 100 μg/mL and weak antifungal activities. Chlorinated benzophenone derivatives 6-8 exhibited antibacterial activities against S. aureus and B. subtilis with MIC values ranging from 3.0 to 50 μg/mL and cytotoxicities against four human cancer cell lines with IC50 values of 6.8-87.8 μM.
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Affiliation(s)
- Hui Lei
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
| | - Xiuping Lin
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Li Han
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
| | - Jian Ma
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
| | - Qingjuan Ma
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
| | - Jialiang Zhong
- Shanghai Institute of Pharmaceutical Industry, Shanghai 201203, China.
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Tiemin Sun
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Jinhui Wang
- Key Laboratory of Structure-Based Drug Design and Discovery, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Xueshi Huang
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang 110819, China.
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Ma LY, Liu DS, Li DG, Huang YL, Kang HH, Wang CH, Liu WZ. Pyran Rings Containing Polyketides from Penicillium raistrickii. Mar Drugs 2016; 15:E2. [PMID: 28025533 DOI: 10.3390/md15010002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/14/2016] [Accepted: 12/15/2016] [Indexed: 11/22/2022] Open
Abstract
Five new pyran rings containing polyketides, penicipyrans A–E (1–5), together with the known pestapyrone A (6), were isolated from the saline soil-derived Penicillium raistrickii. Their structures were determined by interpretation of NMR and HRESIMS data. The absolute configurations of compounds 4 and 5 were established by the modified Mosher’s method and single-crystal X-ray diffraction analysis, respectively. These compounds possessed high structural diversity including two α-pyrones (1, 2), three isocoumarins (3, 4, 6), and one dihydropyran derivative (5). Among them, Compound 5 exhibited cytotoxicity against HL-60 and K562 cell lines with IC50 values of 4.4 and 8.5 μM, respectively.
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Yang CS, Huang HC, Wang SY, Sung PJ, Huang GJ, Chen JJ, Kuo YH. New Diphenol and Isocoumarins from the Aerial Part of Lawsonia inermis and Their Inhibitory Activities against NO Production. Molecules 2016; 21:E1299. [PMID: 27689981 DOI: 10.3390/molecules21101299] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 09/22/2016] [Accepted: 09/23/2016] [Indexed: 12/05/2022] Open
Abstract
Lawsonia inermis Linn (Lythraceae), also known as henna, is a small shrub or tree distributed throughout Taiwan’s Lanyu Island, in North Africa, and in Australia. Its leaves are used as a folk medicine for the treatment of external hemorrhage and fingernail abscesses. Investigation of the ethyl acetate (EtOAc)-soluble fractions from methanol extract of the aerial part of Lawsonia inermis has led to the isolation of a new diphenol, (Z)-4,4′-(prop-1-ene-1,3-diyl)diphenol (1), two new isocoumarin carbonates, inermiscarbonates A (2) and B (3), and six known compounds, 4′-hydroxyflavanone (4), apigenine (5), kampferol (6), luteolin (7), quercetin (8), and (-)-catechin (9). Their structures were determined by detailed analysis of spectroscopic data and comparison with the data of known analogues. Compounds 1 and 4–9 were evaluated for the inhibition of nitric oxide production in lipopolysaccharide (LPS)-stimulated product of nitrite in RAW 264.7 cells with IC50 values of 5.63, 15.72, 8.67, 6.67, 6.17, 7.61, and 14.52 μg/mL, respectively.
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Xiao Z, Chen S, Cai R, Lin S, Hong K, She Z. New furoisocoumarins and isocoumarins from the mangrove endophytic fungus Aspergillus sp. 085242. Beilstein J Org Chem 2016; 12:2077-2085. [PMID: 27829913 PMCID: PMC5082600 DOI: 10.3762/bjoc.12.196] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 09/08/2016] [Indexed: 01/22/2023] Open
Abstract
The chemical investigation of the mangrove endophytic fungus Aspergillus sp. 085242 afforded eight isocoumarin derivatives 1–8 and one isoquinoline 9. Asperisocoumarins A and B (1 and 2) were new furoisocoumarins, and asperisocoumarins E and F (5 and 6) were new isocoumarins. Their structures were established by analysis of their spectroscopic data and the absolute configuration of compound 2 was unambiguously determined by X-ray structure analysis and ECD calculation. Moreover, the absolute configurations of compounds 3–5 were assigned by comparison of their ECD spectra with isocoumarins described in the literature. Asperisocoumarins C and D (3 and 4) were fully characterized spectroscopically and isolated from a natural source for the first time. Asperisocoumarins A–D (1–4) related to the class of furo[3,2-h]isocoumarins are rarely occurring in natural sources. Compounds 2, 5, and 6 showed moderate α-glucosidase inhibitory activity with IC50 of 87.8, 52.3, and 95.6 μM, respectively. In addition, compounds 1 and 3 exhibited weak radical scavenging activity with EC50 values of 125 and 138 μM, respectively.
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Affiliation(s)
- Ze'en Xiao
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, No. 135 of Xingang West Road, Guangzhou, 510275, China.,Shenzhen Academy of Metrology and Quality Inspection, No. 144 of Minkan Road, Minzhi Street, Longhua District, Shenzhen, 518102, China
| | - Senhua Chen
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, No. 135 of Xingang West Road, Guangzhou, 510275, China
| | - Runlin Cai
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, No. 135 of Xingang West Road, Guangzhou, 510275, China
| | - Shao'e Lin
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, No. 135 of Xingang West Road, Guangzhou, 510275, China
| | - Kui Hong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education of China, School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, China
| | - Zhigang She
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, No. 135 of Xingang West Road, Guangzhou, 510275, China
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Toure M, Jaime-Figueroa S, Burslem GM, Crews CM. Expeditious Synthesis of Isoquinolones and Isocoumarins with a Vinyl Borane as an Acetylene Equivalent. European J Org Chem 2016; 2016:4171-4175. [PMID: 28781577 PMCID: PMC5542060 DOI: 10.1002/ejoc.201600575] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Indexed: 11/11/2022]
Abstract
An innovative and simple expeditious synthesis of 3,4-unsubstituted isoquinolones and isocoumarins starting from safe and easy to handle two-carbon acetylene equivalent was developed. The synthetic potential of this new method was further demonstrated in the facile total synthesis of two naturally occurring alkaloids: corydaldine and doryanine.
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Affiliation(s)
- Momar Toure
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, Connecticut 06511, United States
| | - Saul Jaime-Figueroa
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, Connecticut 06511, United States
| | - George M Burslem
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, Connecticut 06511, United States
| | - Craig M Crews
- Departments of Chemistry; Molecular, Cellular & Developmental Biology; Pharmacology, Yale University, New Haven, Connecticut 06511, United States
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35
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Park HB, Perez CE, Perry EK, Crawford JM. Activating and Attenuating the Amicoumacin Antibiotics. Molecules 2016; 21:molecules21070824. [PMID: 27347911 PMCID: PMC5055758 DOI: 10.3390/molecules21070824] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 06/07/2016] [Accepted: 06/20/2016] [Indexed: 01/10/2023] Open
Abstract
The amicoumacins belong to a class of dihydroisocoumarin natural products and display antibacterial, antifungal, anticancer, and anti-inflammatory activities. Amicoumacins are the pro-drug activation products of a bacterial nonribosomal peptide-polyketide hybrid biosynthetic pathway and have been isolated from Gram-positive Bacillus and Nocardia species. Here, we report the stimulation of a “cryptic” amicoumacin pathway in the entomopathogenic Gram-negative bacterium Xenorhabdus bovienii, a strain not previously known to produce amicoumacins. X. bovienii participates in a multi-lateral symbiosis where it is pathogenic to insects and mutualistic to its Steinernema nematode host. Waxmoth larvae are common prey of the X. bovienii-Steinernema pair. Employing a medium designed to mimic the amino acid content of the waxmoth circulatory fluid led to the detection and characterization of amicoumacins in X. bovienii. The chemical structures of the amicoumacins were supported by 2D-NMR, HR-ESI-QTOF-MS, tandem MS, and polarimeter spectral data. A comparative gene cluster analysis of the identified X. bovienii amicoumacin pathway to that of the Bacillus subtilis amicoumacin pathway and the structurally-related Xenorhabdus nematophila xenocoumacin pathway is presented. The X. bovienii pathway encodes an acetyltransferase not found in the other reported pathways, which leads to a series of N-acetyl-amicoumacins that lack antibacterial activity. N-acetylation of amicoumacin was validated through in vitro protein biochemical studies, and the impact of N-acylation on amicoumacin’s mode of action was examined through ribosomal structural analyses.
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Affiliation(s)
- Hyun Bong Park
- Department of Chemistry, Yale University, New Haven, CT 06520, USA.
- Chemical Biology Institute, Yale University, West Haven, CT 06516, USA.
| | - Corey E Perez
- Department of Chemistry, Yale University, New Haven, CT 06520, USA.
- Chemical Biology Institute, Yale University, West Haven, CT 06516, USA.
| | - Elena Kim Perry
- Chemical Biology Institute, Yale University, West Haven, CT 06516, USA.
- Department of Ecology & Evolutionary Biology, Yale University, New Haven, CT 06520, USA.
| | - Jason M Crawford
- Department of Chemistry, Yale University, New Haven, CT 06520, USA.
- Chemical Biology Institute, Yale University, West Haven, CT 06516, USA.
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, CT 06536, USA.
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36
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Seo JH, Kim JE, Shim JH, Yoon G, Bang MA, Bae CS, Lee KJ, Park DH, Cho SS. HPLC Analysis, Optimization of Extraction Conditions and Biological Evaluation of Corylopsis coreana Uyeki Flos. Molecules 2016; 21:94. [PMID: 26784157 PMCID: PMC6273307 DOI: 10.3390/molecules21010094] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 01/07/2016] [Accepted: 01/11/2016] [Indexed: 11/27/2022] Open
Abstract
A method for the separation and quantification of three flavonoids and one isocoumarin by reverse-phase high performance liquid chromatography (HPLC) has been developed and validated. Four constituents present in a crude ethanolic extract of the flowers of Coryloposis coreana Uyeki, were analyzed. Bergenin, quercetin, quercitrin and isosalipurposide were used as calibration standards. In the present study, an excellent linearity was obtained with an r2 higher than 0.999. The chromatographic peaks showed good resolution. In combination with other validation data, including precision, specificity, and accuracy, this method demonstrated good reliability and sensitivity, and can be conveniently used for the quantification of bergenin, quercetin, quercitrin and isosalipurposide in the crude ethanolic extract of C. coreana Uyeki flos. Furthermore, the plant extracts were analyzed with HPLC to determine the four constituents and compositional differences in the extracts obtained under different extraction conditions. Several extracts of them which was dependent on the ethanol percentage of solvent were also analyzed for their antimicrobial and antioxidant activities. One hundred % ethanolic extract from C. coreana Uyeki flos showed the best antimicrobial activity against the methicillin-resistant Staphylococcus aureus (MRSA) strain. Eighty % ethanolic extract showed the best antioxidant activity and phenolic content. Taken of all, these results suggest that the flower of C. coreana Uyeki flos may be a useful source for the cure and/or prevention of septic arthritis, and the validated method was useful for the quality control of C. coreana Uyeki.
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Affiliation(s)
- Ji-Hye Seo
- Department of Oriental Medicine Materials, Dongshin University, Naju, Jeonnam 520-714, Korea.
| | - Jung-Eun Kim
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan, Jeonnam 534-729, Korea.
| | - Jung-Hyun Shim
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan, Jeonnam 534-729, Korea.
| | - Goo Yoon
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan, Jeonnam 534-729, Korea.
| | - Mi-Ae Bang
- Research Develpoment Team, Jeonnam Bioindustry Foundation, Food Research Institute, Naju, Jeonnam 520-330, Korea.
| | - Chun-Sik Bae
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea.
| | - Kyung-Jin Lee
- Department of Convergence Medicine, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Korea.
| | - Dae-Hun Park
- Department of Oriental Medicine Materials, Dongshin University, Naju, Jeonnam 520-714, Korea.
| | - Seung-Sik Cho
- Department of Pharmacy, College of Pharmacy, Mokpo National University, Muan, Jeonnam 534-729, Korea.
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Tian JF, Yu RJ, Li XX, Gao H, Hu D, Guo LD, Tang JS, Yao XS. Cyclohexenones and isocoumarins from an endophytic fungus of Sarcosomataceae sp. J Asian Nat Prod Res 2015; 17:550-558. [PMID: 26022116 DOI: 10.1080/10286020.2015.1043904] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Three new cyclohexenones (1-3, named sarcosones A-C) and two new isocoumarins (4 and 5), together with five known isocoumarins (6-10), were isolated from the solid cultures of an endophytic fungus Sarcosomataceae sp. NO.49-14-2-1. Their chemical structures were elucidated by analyses of HR-ESI-TOF-MS, (1)H, (13)C NMR, (1)H-(1)H COSY, HSQC, and HMBC spectra. Their absolute configurations were determined via modified Mosher's method and circular dichroism spectra method.
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Affiliation(s)
- Jie-Feng Tian
- a College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University , Shenyang 110016 , China
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38
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Ni G, Fu NJ, Zhang D, Yang HZ, Chen XG, Yu DQ. An unusual dihydrobenzofuro isocoumarin and ent-kaurane diterpenoids from Pteris multifida. J Asian Nat Prod Res 2015; 17:423-429. [PMID: 25966607 DOI: 10.1080/10286020.2015.1040777] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An unusual 5-C-methylated-dihydrobenzofuroisocoumarin, named multifidarin A (1), and two new ent-kaurane diterpenoids, named multikauranes A (2) and B (3), together with three known ent-kaurane diterpenoids, were isolated from the whole plants of Pteris multifida. The structures of 1-3 were elucidated by spectroscopic methods. The cytotoxic activities of all new compounds were evaluated against five human tumor cell lines. A possible biosynthetic process for the formation of 1 is proposed.
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MESH Headings
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Coumarins/chemistry
- Coumarins/isolation & purification
- Coumarins/pharmacology
- Diterpenes, Kaurane/chemistry
- Diterpenes, Kaurane/isolation & purification
- Diterpenes, Kaurane/pharmacology
- Drug Screening Assays, Antitumor
- Drugs, Chinese Herbal/chemistry
- Drugs, Chinese Herbal/isolation & purification
- Drugs, Chinese Herbal/pharmacology
- Humans
- Molecular Structure
- Nuclear Magnetic Resonance, Biomolecular
- Pteris/chemistry
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Affiliation(s)
- Gang Ni
- a State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Chinese Academy of Medical Sciences and Peking Union Medical College, Institute of Materia Medica , Beijing 100050 , China
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Prompanya C, Fernandes C, Cravo S, Pinto MMM, Dethoup T, Silva AMS, Kijjoa A. A new cyclic hexapeptide and a new isocoumarin derivative from the marine sponge-associated fungus Aspergillus similanensis KUFA 0013. Mar Drugs 2015; 13:1432-50. [PMID: 25789601 PMCID: PMC4377992 DOI: 10.3390/md13031432] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/04/2015] [Accepted: 03/09/2015] [Indexed: 11/26/2022] Open
Abstract
A new isocoumarin derivative, similanpyrone C (1), a new cyclohexapeptide, similanamide (2), and a new pyripyropene derivative, named pyripyropene T (3) were isolated from the ethyl acetate extract of the culture of the marine sponge-associated fungus Aspergillus similanensis KUFA 0013. The structures of the compounds were established based on 1D and 2D NMR spectral analysis, and in the case of compound 2 the stereochemistry of its amino acid constituents was determined by chiral HPLC analysis of the hydrolysate by co-injection with the d and l amino acids standards. Compounds 2 and 3 were evaluated for their in vitro growth inhibitory activity against MCF-7 (breast adenocarcinoma), NCI-H460 (non-small cell lung cancer) and A373 (melanoma) cell lines, as well as antibacterial activity against reference strains and the environmental multidrug-resistant isolates (MRS and VRE). Only compound 2 exhibited weak activity against the three cancer cell lines, and neither of them showed antibacterial activity.
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Affiliation(s)
- Chadaporn Prompanya
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-123 Porto, Portugal.
| | - Carla Fernandes
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-123 Porto, Portugal.
- Centro de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Laboratório de Química Orgânica, Departamento de Ciências Químicas, Faculdade de Farmácia, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Sara Cravo
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-123 Porto, Portugal.
- Centro de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Laboratório de Química Orgânica, Departamento de Ciências Químicas, Faculdade de Farmácia, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Madalena M M Pinto
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-123 Porto, Portugal.
- Centro de Química Medicinal da Universidade do Porto (CEQUIMED-UP), Laboratório de Química Orgânica, Departamento de Ciências Químicas, Faculdade de Farmácia, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Tida Dethoup
- Department of Plant Pathology, Faculty of Agriculture, Kasetsart University, Bangkok 10240, Thailand.
| | - Artur M S Silva
- Departamento de Química & QOPNA, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
| | - Anake Kijjoa
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Rua dos Bragas 289, 4050-123 Porto, Portugal.
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Yang YX, Luo Q, Hou B, Yan YM, Wang YH, Tang JJ, Dong XP, Ma XY, Yang TH, Zuo ZL, Cheng YX. Periplanosides A-C: new insect-derived dihydro isocoumarin glucosides from Periplaneta americana stimulating collagen production in human dermal fibroblasts. J Asian Nat Prod Res 2015; 17:988-995. [PMID: 26499169 DOI: 10.1080/10286020.2015.1047771] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Three new dihydroisocoumarin glucosides, termed periplanosides A-C (1-3), a known analog, pericanaside (4), and the other twenty known compounds were isolated from the insect Periplaneta americana. Their structures including absolute configurations were determined by comprehensive spectroscopic analyses and computational methods. Biological evaluation showed that compound 2 could stimulate collagen production by 31.2% in human dermal fibroblasts-adult (HDFa) at the concentration of 30 μM, indicating its significance in skin repair and ulcer.
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Affiliation(s)
- Yong-Xun Yang
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
- b College of Pharmacy, Chengdu University of Traditional Chinese Medicine , Chengdu 610075 , China
| | - Qi Luo
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
| | - Bo Hou
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
| | - Yong-Ming Yan
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
| | - Yue-Hu Wang
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
| | - Jian-Jun Tang
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
| | - Xiao-Ping Dong
- b College of Pharmacy, Chengdu University of Traditional Chinese Medicine , Chengdu 610075 , China
| | - Xiu-Ying Ma
- c Sichuan Gooddoctor-Panxi Pharmaceutical Co., Ltd , Xichang 615000 , China
| | - Tong-Hua Yang
- d The First People's Hospital of Yunnan Province , Kunming 650032 , China
| | - Zhi-Li Zuo
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
| | - Yong-Xian Cheng
- a State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201 , China
- b College of Pharmacy, Chengdu University of Traditional Chinese Medicine , Chengdu 610075 , China
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41
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Li C, Gong B, Cox DG, Li C, Wang J, Ding W. Dichlorodiaportinol A - A new chlorine-containing isocoumarin from an endophytic fungus Trichoderma sp. 09 from Myoporum bontioides A. Gray and its cytotoxic activity. Pharmacogn Mag 2014; 10:S153-8. [PMID: 24914297 PMCID: PMC4047575 DOI: 10.4103/0973-1296.127367] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 06/29/2013] [Accepted: 02/21/2014] [Indexed: 11/13/2022] Open
Abstract
Background: Myoporum bontioides A. Gray, an evergreen shrub from the Myoporaceae family, is a commonly used medicinal plant. Many studies have been conducted on the biologically active constituents of whole parts of M. bontioides. However, the endophytes of M. bontioides have not been intensively investigated. A new chlorine-containing isocoumarin, named dichlorodiaportinol A (1) was isolated from the endophytic fungus Trichoderma sp. 09 isolated from the root of M. bontioides. Its cytotoxic activity against human breast cancer (MCF-7) and human liver cancer (HepG2) cell lines was evaluated. Materials and Methods: Different open silica gel column chromatographic techniques with different solvent systems were used for the separation of the constituents of the ethyl acetate extract of the culture broth of the endophytic fungus Trichoderma sp. 09. The structure of compound one was identified by analysis of spectroscopic data [one-dimensional (1D), two-dimensional (2D)-nuclear magnetic resonance (NMR), ultraviolet (UV), infrared (IR) and Mass spectrometry (MS)]. 3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide (MTT) assay method was used for the evaluation of cytotoxic activity of compound one against MCF-7 and HepG2 cell lines. Results: Compound one was identified as 3-(3,3-dichloro-2,3-dihydroxy-propyl)-8-hydroxy-6- methoxy-isochromen-1-one. It inhibited MCF-7 and HepG2 cell lines, with half maximal inhibitory concentration (IC50) values of 17.8 and 39.6 μg/mL, respectively. Conclusions: Compound one is a new chlorine-containing isocoumarin with moderate cytotoxic activity against MCF-7 and HepG2 cell lines. Thus, endophytes of M. bontioides are worthy of consideration for the development and research of antitumor agents.
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Affiliation(s)
- Chunyuan Li
- Institute of Biomaterial, College of Science, South China Agricultural University, Guangzhou, China
| | - Bing Gong
- Institute of Biomaterial, College of Science, South China Agricultural University, Guangzhou, China
| | - Daniel G Cox
- Department of Pharmacognosy and Research Institute of Pharmaceutical Sciences, School of Pharmacy, the University of Mississippi, Mississippi University, Mississippi, USA
| | - Caili Li
- Xinyang Branch, Henan Provincial academy of Agricultural Sciences, Xinyang, China
| | - Jinhua Wang
- Institute of Biomaterial, College of Science, South China Agricultural University, Guangzhou, China
| | - Weijia Ding
- Institute of Biomaterial, College of Science, South China Agricultural University, Guangzhou, China
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42
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Yadav P, Purohit NV. Synthesis and biological evaluation of some novel 3,4-disubstituted isocoumarins. Indian J Pharm Sci 2012; 73:171-8. [PMID: 22303060 PMCID: PMC3267301 DOI: 10.4103/0250-474x.91586] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 04/14/2011] [Accepted: 04/18/2011] [Indexed: 11/15/2022] Open
Abstract
In this paper we report the synthesis of a new family of 4-alkyl isocoumarin derivatives having bromo carbonyl and amino carbonyl group at 3rd position of the heterocyclic ring. Synthesis, spectral analysis and bioactivity of new isocoumarin derivatives are discussed in this paper. Some of the synthesized compounds displayed comparable antibacterial activity and some of the new compounds showed an interesting inhibitory effect on the growth of four pathogen fungi involved in plant diseases. A fair number of compounds were found to have good analgesic property on comparing with standard drug analgin.
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Affiliation(s)
- Poonam Yadav
- School of Science and Education, Navrachana University, Vadodara-391410, India
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