申请人:Pfizer Inc.
公开号:US04782050A1
公开(公告)日:1988-11-01
Antibacterial penicillins of the formula ##STR1## or a pharmaceutically acceptable salt thereof wherein R.sup.1 is a heterocyclic group and R is hydrogen, the residue of certian carboxy protecting groups or the residue of an ester group readily hydrolyzable in vivo having activity against resistant organisms.
公式##STR1##的抗菌青霉素或其药用盐,其中R.sup.1是一个杂环基团,R是氢,具有对抗抗药性生物活性的某些羧基保护基团的残基或在体内容易水解的酯基团的残基。