Verfahren zur Herstellung von 2,2-disubstituierten 3-Acyl-5a-azido-thiazolidin-4-carbonsäuren oder Säurederivaten davon

摘要

Actinomyces aureofaciens LS-B-22-OL strain was isolated after induced mutation of the parent microorganism Actinomyces aureofaciens LS-B-16 by successive action of X rays, ethyleneimine and UV irradiation. The title mutant is capable to produce higher yield of tetracycline and chlortetracycline (biomycin). Essential morphological characteristics are indicated.