申请人:Pfizer Inc.
公开号:US04080451A1
公开(公告)日:1978-03-21
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.
已制备了一系列新型7-(D.α.-氨基苯乙酰胺基)-和7-(D.α.-羟基苯乙酰胺基)-Δ3-头孢菌素衍生物,其中杂环硫甲基基团位于分子的3位。这些化合物可用作抗菌剂,用于治疗由革兰氏阳性和革兰氏阴性细菌引起的疾病。首选成员包括7-(D.α.-羟基苯乙酰胺基)-3-(3-氨基甲酰-1,2,4-三唑-5-基)硫甲基头孢-3-酮-4-羧酸和7-(D.α.-羟基苯乙酰胺基)-3-(2-羧甲氧甲基-1,3,4-噻二唑-5-基)硫甲基头孢-3-酮-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。