Novel 20-demethoxy-20-acyloxymaytansinoids representable by the formula:
[wherein X is chlorine or hydrogen; R1 is hydrogen or acyl group; R2 is acyl group] are produced from 20-demethoxy-20-hydroxymaytansinoids by means of acylation.
The compounds are useful as antifungal, antiprotozoal or antitumor agent.
由 20-去甲氧基-20-羟基美坦素通过酰化反应制得的新型 20-去甲氧基-20-酰氧基美坦素:
[其中 X 为
氯或氢;R1 为氢或酰基;R2 为酰基]是由 20-去甲氧基-20-羟基美坦素通过酰化反应制得的。
这些化合物可用作抗真菌剂、抗原虫剂或抗肿瘤剂。