| abstract |
PROCEDURE TO PREPARE CEPHALOSPORIN DERIVATIVES. IT CONSISTS OF REACTING A COMPOUND OF FORMULA (II) WITH A COMPOUND OF FORMULA R4R5NH, TO OBTAIN A COMPOUND OF FORMULA (I) AND ITS PHARMACEUTICALLY ACCEPTABLE SALTS. BEING: R1, 2-AMINOTIAZOL-4-ILO OR 2-AMINOOXAZOL-4-ILO REPLACED IN POSITION 5 BY HA1; R2, H, C 1 TO 6 ALKYL, C 3 TO 8 CYCLOALKYL AND OTHERS; R3, HO METOXY; R4, H, C 1 TO 4 ALKYL, C 1 TO 4 HALOALKYL AND OTHERS; R5, A RADICAL OF FORMULA (III); R26, H, PHENYL OR BENZYL; R27, ALKYL FROM C 1 TO 6, ALKYLAMINE FROM C 1 TO 6 AND OTHERS; Y R50, = N-O-R RAISED TO 2; AND X, O, S OR METHYLENE. IT IS USED AS ANTIBACTERIAL. *FORMULA* |