BETA-LACTAM ANTIBACTERIAL COMPOUND, ITS MANUFACTURE AND ITS MEDICINAL COMPOUND

摘要

The present invention provides the compounds of the formula (II): (II) and pharmaceutically acceptable salts and cleavable esters thereof wherein RCONH is an organic acylamino group and E is a carboxy group or pharmaceutically acceptable salt or ester thereof or is a cyano group. Their preparation is described as is their use in compositions containing them. Compounds wherein RCONH is replaced by an azido group are described as useful intermediates.