| 摘要 |
The present invention relates to derivatives of the family of cephalosporins, of formula: <IMAGE> (I) in which <IMAGE> is an acid, a salt or an ester of this acid, R1 is a group of form <IMAGE> in which RA and RB are H or alkyl or form a saturated cyclobutyl or cyclopentyl ring and RC is H or COOH, R2 is a thiazolium salt or a OCOCH2RD group in which RD is a 1,3-thiazol-4-yl group. The invention also relates to a process for preparing the products of formula (I) and to drugs containing said products. |
