CLAVULANIC ACID DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

The present invention provides the compounds of the formula (II): and esters thereof, wherein R<1> is a hydrogen atom or a lower alkyl group and R<2> is a hydrogen atom or lower alkyl group; or R<1> and R<2> together may represent a bond or a group - (CH2)n- where n is an integer from 1 to 6. These compounds are ss-lactamase inhibitors and antibacterial agents. Their use is described as are processes for their preparation.