Inhibition of .beta.lactamase with 6 .beta.-(substituted
申请人:Farmitalia Carlo Erba S.r.l.
公开号:US05200403A1
公开(公告)日:1993-04-06
Compounds of the formula I ##STR1## wherein R' is a free or esterified carboxy group or a carboxylate anion and R.sup.2 is an organic group have beta-lactamase inhibition activity. A process for the preparation of the same and pharmaceutical compositions containing these compounds are provided.