group located at the C-5 carbon were transformed. Strains from the genus Fusarium carried out hydrolytic dehalogenation, while strains from the genus Absidia carried out hydroxylation of the C-7 carbon. Both substrates and biotransformation products were then tested for antimicrobial activity against multidrug-resistant strains of both bacteria and yeast-like fungi. The highest antifungal activity against
本研究的目的是获得
环己烷环(C-3 或 C-5 碳)中具有偕二甲基基团和内酯环中具有甲基基团的新卤代内酯,然后使用丝状真菌对它们进行
生物转化。对两种非对映异构体混合物形式的卤内酯进行了筛选
生物转化,结果表明只有位于C-5碳上具有偕二甲基基团的化合物才被转化。来自镰刀菌属的菌株进行
水解脱卤,而来自Absidia的菌株进行C-7碳的羟基化。然后测试底物和
生物转化产物对细菌和酵母样真菌的多重耐药菌株的抗菌活性。化合物 5b 获得了针对都柏林念珠菌和白色念珠菌菌株的最高抗真菌活性,而化合物 4a 获得了针对
金黄色葡萄球菌 MRSA 的抗微
生物活性。