6-Beta(substituted)-(S)-hydroxymethylpenicillanic acids and derivatives thereof
申请人:PFIZER INC.
公开号:EP0276942A1
公开(公告)日:1988-08-03
Antibacterial penicillins of the formula
or a pharmaceutically acceptable salt thereof wherein R1 is a heterocyclic group and R is hydrogen, the residue of certain carboxy protecting groups or the residue of an ester group readily hydrolyzable in vivo having activity against resistant organisms.
6-beta(substituted)-(S)-hydroxymethylpenicillanic acids and derivatives
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.