Antibiotic derivatives, derived from cephalosporins with thiazolyl substituents, pharmaceutical preparations and salts thereof

摘要

The present invention relates to derivatives of the family of cephalosporins, of formula: ##STR1## in which ##STR2## is an acid, a salt or an ester of this acid, R.sub.1 is a group of form ##STR3## in which R. sub.A and R.sub.B are H or alkyl or form a saturated cyclobutyl or cyclopentyl ring and R.sub.C is H or COOH, R.sub.2 is a thiazolium salt or a OCOCH.sub.2 R.sub.D group in which R.sub.D is a 1,3-thiazol-4-yl group.PPThe invention also relates to a process for preparing the products of formula (I) and to drugs containing said products.