| abstract |
A CEPHALOSPORINE DERIVATIVE THAT HAS A SUBSTITUTED OR NOT REPLACED GROUP 2- (5-TIAZOLIL) VINYL IN POSITION 3 AND IS REPRESENTED BY THE FOLLOWING FORMULA (I) WHERE X IS CH ON, R {SUP, 1} IS AN AMINO GROUP OR A PROTECTED AMINO GROUP, R {SUP, 2} IS A HYDROGEN ATOM OR A HYDROXIMINE PROTECTION GROUP, R {SUP, 3} IS A HYDROGEN ATOM, A SALT FORMING CATION OR A CARBOXYL PROTECTION GROUP, R {SUP, 4} IT IS A YR HYDROGEN ATOM {SUP, 5} IT IS A HYDROGEN ATOM, A LOW RENT GROUP, A LOW HALOALKYL GROUP OR A HALOGEN ATOM, NOW SYNTHESIZED AS A CEFEM COMPOUND THAT EXHIBITS ANCIENT ACTIVITIES AS A THERAPEUTIC AGENT FOR VARIOUS BACTERIAL INFECTIONS. |