PROCESS FOR THE PREPARATION OF 3-CEPHEM-4-CARBOXYLIC ACID COMPOUNDS 3, 7-DISUBSTITUTED AND THEIR PHARMACEUTICALLY ACCEPTABLE SALTS, NOVEL PRODUCTS THUS OBTAINED AND THEIR USE FOR THEIR ANTIMICROBIAL ACTIVITIES

摘要

P Process for the preparation of 3,7-disubstituted 3-cephem-4-carboxylic acid compounds and new products thus obtained. /P P These compounds have the formula: /P