activity with a high MIC value of 128 μg ml−1 against Cryptococcus neoformans and Saccharomyces cerevisiae. Fifteen ester derivatives of altholactone 1–15 were modified by esterification and their structures were confirmed by spectroscopic methods. Most of the ester derivatives exhibited stronger anti-fungal activities than that of the precursor altholactone. 3-Bromo- and 2,4-dichlorobenzoates (7 and
Altholactone表现出抗真菌活性与128微克ml的高MIC值-1对新型隐球菌和酿酒酵母。altholactone十五酯衍
生物1 - 15被酯化改性其结构分别通过光谱方法证实。大多数酯衍
生物显示出比前驱体内酯更强的抗真菌活性。3-
溴和
2,4-二氯苯甲酸酯(7和15)对C的最低抑菌浓度(MIC)最低。新型隐球菌在16微克毫升-1 ,而4-
溴,4-
碘,和1-
溴-3- chlorobenzoates(11 - 13)中显示的有效活性针对酿酒酵母用1μg毫升的MIC值-1。总之,该分析表明,通过向3-OH基团中添加卤代苯甲酰基,可以增强甲内酯的抗真菌活性。