7-substituted 3-cephem or cepham compounds characterized by the grouping, in the 7-position thereof, of the formula: R'--A--CONH-- where R' is thiadiazolyl or amino thiazolyl, and A is methylene carrying oxyiimino, or R' is haloacetyl and A may also be methylene, their preparation, and pharmaceutical uses.
7-取代3-
头孢菌素或头孢烷化合物的特征是其7-位置上的配基为公式R'--A--CONH--,其中R'为
噻二唑基或
氨基
噻二唑基,A为携带氧
肟基的亚甲基,或R'为卤代乙酰基,A也可以是亚甲基。它们的制备和药物用途。