Derivatives of 6.beta.-hydroxyalkylpenicillanic acids as
申请人:Pfizer Inc.
公开号:US04287181A1
公开(公告)日:1981-09-01
6.beta.-Hydroxyalkylpenicillanic acids and derivatives thereof as useful enhancers of the effectiveness of several .beta.-lactam antibiotics against many .beta.-lactamase producing bacteria, and 6.beta.-substituted penicillanic acid benzyl ester derivatives as useful intermediates leading to said agents which enhance the effectiveness of .beta.-lactam antibiotics.