DERIVATIVES OF 1-CARBA-(1-DETIA)-CEPHEME Russian patent published in 1998 - IPC

FIELD: medicine. SUBSTANCE: 3-substituted 1-carba-(1-detia)-cephemes have formula I where R is (C₁-C₆) alkyl or (C₁-C₆) halogen alkyl; A and A′ are independently hydrogen atom, (C₁-C₆) alkyl, nitro, amino, pyridyl, or phenyl, or A and A′ form together groups in which X is hydrogen, halogen, (C₁-C₆) alkoxy, amino, nitro groups and Y is nitrogen atom or carbon atom. EFFECT: improved quality. 8 cl