abstract |
DERIVED FROM 2-AMINOTHIAZOLE REPRESENTED BY THE GENERAL FORMULA OR ONE OF ITS SALTS: (CF DRAWING IN BOPI) IN WHICH R IS AN AMINO GROUP WHICH CAN BE PROTECTED, AND R IS A MONOHALOGENOMETHYL, ALKYLTHIOCALKARBONYL, ALKYLTHIOCARBONYL OR ARTHIOCARBONYL GROUP. THIS DERIVATIVE IS USEFUL FOR THE PREPARATION OF 2- (2-AMINOTHIAZOL-4-YL) GLYOXYL ACID DERIVATIVES AND THEIR SALTS, WHICH ARE USED FOR THE PREPARATION OF CEPHALOSPORIN-TYPE ANTIBIOTICS. |