ANALOGIFREMGANGSMAADE TIL FREMSTILLING AF CEPHALOSPORANSYREDERIVATER OG ESTERE OG SALTE DERAF

摘要

Compounds of the formula I are prepared by reaction of a compound of the formula V with the compound of the formula VI. The meaning of the substituents A and A<1> can be taken from Claim 1. The compounds prepared can be used as active compounds in pharmaceutical preparations having antibacterial action. They are used e.g. for the control of Shig. dysenteriae, Sal. enteritidis, Haemophilus and Neisseria infections.