2-oxozetidinone derivatives, their production and use

摘要

Novel 1-sulfo-2-oxoazetidine derivatives and their production and use. These 1-sulfo-2-oxoazetidine derivatives exhibit excellent antimicrobial activity against gram-positive and gram-negative bacteria, and beta -lactamase inhibitory activity, thus being of value as a prophylactic or therapeutic agent for infectious diseases in mammals.