framstellning of new pepstatiner benemnda pepstatin (b) and (c pepstatin by cultivation of testaceus atcc 21469 or s argenteolus was toyonakensis atcc 21468 in medium der kvevekellorna mainly...

摘要

1394231 Pepsin inhibitors ZAIDAN HOJIN BISEIBUTSU KAGAKU KENKYO KAI 8 March 1972 [26 March 1971] 10887/72 Heading C2C [Also in Division C3] Novel compounds of the Formula I wherein R is n-hexanoyl or isohexanoyl and C 1-4 alkyl esters and salts thereof are prepared by cultivating under aerobic conditions Streptomyces testaceus (ATCC No. 21467) or Steptomyces argenteolus var. toyonakensia (ATCC No. 21468) and, if desired, converting the resulting acids into esters or salts.