PROCEDE POUR LA PREPARATION DES LACTAMES

摘要

.beta.-Lactams having a sulfonic acid substituent in the 1-position and an amine function in the 3-position and having the formula: (see fig. I) wherein R1 is H or acyl derived from a carboxylic acid; R2 is H or alkoxy; R3 and R4, the same or different, are H, alkyl, cycloalkyl, phenyl or substituted phenyl, or one of R3 and R4 is H and the other is alkoxycarbonyl, alken-1-yl, alkyn-1-yl, 2-phenylethenyl or 2-phenylethynyl; and X is H or SO3X is SO3-M+ wherein M+ is a cation, and the use of said .beta.-lactams as antibiotics.