New Isocoumarins from an Endophytic Fungal Strain Diaporthe arengae M2 and their Antibacterial Activities

文献类型： 外文期刊

第一作者： Liu, De-Sui

作者： Liu, De-Sui;Ma, Qing-Yun;Yang, Li;Xie, Qing-Yi;Dai, Hao-Fu;Zhao, You-Xing;Liu, De-Sui;Ma, Qing-Yun;Yang, Li;Xie, Qing-Yi;Dai, Hao-Fu;Zhao, You-Xing;Liu, De-Sui;Zhang, Jun-Feng;Wu, You-Gen

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关键词： Endophytic fungi; Diaporthe sp.; Isocoumarin derivatives; Antibacterial activity

期刊名称：CHEMISTRY & BIODIVERSITY （ 影响因子：2.5； 五年影响因子：2.6 ）

ISSN： 1612-1872

年卷期： 2025 年 22 卷 3 期

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收录情况： SCI

摘要： Four new isocoumarin derivatives 12-O-acetyl-isocitreoisocoumarinol (1), (+)-(10R)-O-acetyl-diaportinol (2-a), (-)-(10S)-O-acetyl-diaportinol (2-b), peyroisocoumarin E (3) and new stereoconfigurations of three isocoumarin derivatives desmethyldichlorodiaportinol A (4), threo-monochlorodiaportinol A (5-a), erytheo-monochlorodiaportinol A (5-b), together with nine known ones (6-14), were separated from the rice fermentation of endophytic fungus Diaporthe arengae M2 isolated from Camellia oleifera. The structures of new compounds were determined by extensive spectroscopic analyses including nuclear magnetic resonance (NMR) and high resolution electrospray ionization mass spectroscopy (HR-ESI-MS). Compounds 4, 7, 8, 12, 13 exhibited definite inhibition against five strains of bacteria with the MIC values range from 16 mu g/mL to 64 mu g/mL.

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