PROCESS FOR PRODUCING NEW 7-SQUARE BRACKET-ALPHA-AMINO-BRACKET-1,3-DITHIIN-5-YL-BRACKET CLOSED-ACETAMIDO-SQUARE BRACKET CLOSED-3-METHYL-CEPH-3-EME-4-CARBOXYLIC ACID DERIVATIVES

摘要

Cephalosporin p & derivatives of general formula (i) in which r represents a carboxyl radical or a radical of general formula (ii) in which r 1 is hydrogen or alkyl and r2 are alkyl or cyclohexyl, as well as their addition salts with acids and possibly their metal salts or their addition salts with nitrogenous bases other than the aqueous ammonia, their preparation and the compositions which contain them. These compositions are particularly useful in the treatment of bacterial infections. / p