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E—73(Ⅰ)是从微生物白链霉菌的培养滤液中分离出来的抗癌物质(见前文)。同时分离得到的还有一种抗霉菌物质,其化学成分是已知物环己亚酰胺衍生物的两个非对映立
E-73 (I) is an anti-cancer substance isolated from the culture filtrate of the microorganism Streptomyces albus (see above). Also isolated is an antimycotic substance whose chemical composition is the two diastereoisomers of the known cycloheximide derivative