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Antimicrobial alkaloids produced by the mangrove endophyte Penicillium brocae MA-231 using the OSMAC approach

机译:红树内生菌 brecilliium brocae MA-231使用OSMAC方法生产的抗菌生物碱

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The OSMAC (one strain-many compounds) protocol was used in this study to obtain various metabolites from the mangrove-derived endophytic fungus Penicillium brocae MA-231. As a result, four new thiodiketopiperazine alkaloids, penicibrocazines F–I (1–4), together with two new N-containing p-hydroxyphenopyrrozin derivatives brocapyrrozins A and B (7 and 8) as well as six known alkaloids (5, 6, and 9–12), were identified from the extract of the Czapek culture medium of the fungus. Their structures and absolute configurations were determined through interpretation of their spectroscopic data and by X-ray crystallographic analysis. Compounds 7 and 9 exhibited potent activity against human pathogenic bacterium Staphylococcus aureus with MIC values of 0.125 and 0.5 μg mL?1, respectively.
机译:本研究中使用OSMAC(一种菌株-多种化合物)方案从红树林衍生的内生真菌 brecilliium brocae MA-231中获得各种代谢产物。结果,出现了四种新的硫代二酮哌嗪生物碱,青霉菌素F–1(1-4),以及两种新的含 N p -羟基苯吡咯嗪衍生物溴吡咯嗪A和B(7从真菌的Czapek培养基提取物中鉴定出8种和6种已知的生物碱(5、6和9-12)。它们的结构和绝对构型是通过解释其光谱数据和通过X射线晶体学分析确定的。化合物7和9对人病原菌金黄色葡萄球菌表现出强效活性,MIC值分别为0.125和0.5μgmL ?1

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