PROCEDE D'OBTENTION DE LA RIPHAMICINE S PAR LA HYDROLYSE DE LA RIPHAMICINE O

摘要

A process for preparing rifamycin S from rifamycin O. Rifamycin O is dissolved in a mixture of an organic solvent and an alcohol at room temperature. The rifamycin O is then hydrolyzed with a mineral acid and the thus obtained rifamycin S is purified by crystallization.