Two New Isoquinolines from Cigar Tobacco-Derived Endophytic Fungi Aspergillus puniceus and Their Antibacterial Activity

文献类型: 外文期刊

第一作者: Chen, Meng-Si

作者: Chen, Meng-Si;Qiu, Wan-Ya;Li, Wei;Dong, Miao;Wang, Wei-Guang;Li, Yin-Ke;Hu, Qiu-Fen;Chen, Meng-Si;Qiu, Wan-Ya;Gong, Da-Ping;Lin, Zhong-Long;Wu, Yu-Ping;Yao, Heng;Hu, Qiu-Fen

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关键词: isoquinolines; fungi Aspergillus puniceus; antibacterial activities

期刊名称:CHEMISTRY OF NATURAL COMPOUNDS ( 影响因子:0.8; 五年影响因子:0.8 )

ISSN: 0009-3130

年卷期: 2023 年

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收录情况: SCI

摘要: With the aims of screening more antibacterial activity metabolites, in this study, two new (1 and 2), together with five known (3-7) isoquinolines were isolated from the cigar tobacco-derived endophytic fungi Aspergillus puniceus. Their structures were determined by means of HR-ESI-MS and extensive 1D and 2D NMR spectroscopic studies. The new compounds were evaluated for antibacterial activities against Pseudomonas syringae (the main pathogenic sources of tobacco angular leaf spot disease), and compounds 1 and 2 exhibited inhibitory effects with MIC50 values of 8.5 and 5.4 mu g/mL respectively. These rates are lower than that of positive control (agricultural streptomycin, with MIC50 of 2.2 mu g/mL).

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