PIPERAZINOPHENYL-AND PIPERAZINOPHENYLOXYCARBOXYLIC ACID DERIVATIVES, AND PROCESSES AND INTERMEDIATES FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS COMPRISING THEM

摘要

Compounds having fibrinogen receptor-antagonistic activity, of the general formula I <IMG> in which Z is oxygen or a methylene group, B is a phenyl or pyridyl radical, R1 is hydrogen or a group forming a biolabile ester, and their physiologically acceptable acid addition salts and physiologically acceptable salts of acids of formula I.