申请人:Pfizer Inc.
公开号:US04183925A1
公开(公告)日:1980-01-15
A series of novel 7-(D-.alpha.-aminophenylacetamido)- and 7-(D-.alpha.-hydroxyphenylacetamido)-.DELTA..sup.3 -cephem derivatives have been prepared wherein a heterocyclic thiomethyl moiety is located at the 3-position of the molecule. These compounds are useful as antibacterial agents for the treatment of diseases caused by Gram-positive and Gram-negative bacteria. Preferred members include 7-(D-.alpha.-hydroxyphenylacetamido)-3-(3-carbamoyl-1,2,4-triazol-5-yl)thi omethylceph-3-em-4-carboxylic acid and 7-(D-.alpha.-hydroxyphenylacetamido)-3-(2-carboxymethoxy-methyl-1,3,4-thia diazol-5-yl)thiomethylceph-3-em-4-carboxylic acid. Alternative methods of preparation are provided for these compounds, including various synthetic routes leading to the required novel heterocyclic thiol intermediates.
一系列新型7-(D-.alpha.-氨基苯乙酰胺基)-和7-(D-.alpha.-羟基苯乙酰胺基)-.DELTA..sup.3-头孢菌素衍生物已制备,其中杂环硫甲基基团位于分子的3-位置。这些化合物可用作治疗由革兰氏阳性和革兰氏阴性细菌引起的疾病的抗菌剂。首选成员包括7-(D-.alpha.-羟基苯乙酰胺基)-3-(3-氨基甲酰基-1,2,4-三唑-5-基)硫甲基头孢-3-酰基-4-羧酸和7-(D-.alpha.-羟基苯乙酰胺基)-3-(2-羧甲氧基甲基-1,3,4-噻二唑-5-基)硫甲基头孢-3-酰基-4-羧酸。提供了这些化合物的替代制备方法,包括导致所需新型杂环硫醇中间体的各种合成路线。