申请人:Eli Lilly and Company
公开号:US03962227A1
公开(公告)日:1976-06-08
7-Acylamido- and 7-amino-3-halo-3-cephem-4-carboxylic acids, esters and pharmaceutically-acceptable salts and esters thereof are new cephalosporin compounds provided by the reaction of a 7-acylamido-3-hydroxy-3-cephem-4-carboxylic acid ester or a 7-amino-3-hydroxy-3-cephem-4-carboxylic acid ester with an iodinating, fluorinating, chlorinating, or brominating reagent. For example, 7-amino-3-chloro-3-cephem-4-carboxylic acid and 7-phenoxyacetamido-3-chloro-3-cephem-4-carboxylic acid are provided. The 7-acylamido-3-halo cephalosporin acids and pharmaceutically acceptable salts and esters provided are valuable antibiotic compounds having desirable therapeutic properties.
7-酰胺基和7-氨基-3-卤代-3-头孢烯-4-羧酸,其酯及其药用可接受的盐和酯是通过将7-酰胺基-3-羟基-3-头孢烯-4-羧酸酯或7-氨基-3-羟基-3-头孢烯-4-羧酸酯与碘化、氟化、氯化或溴化试剂反应而提供的新头孢菌素化合物。例如,提供了7-氨基-3-氯-3-头孢烯-4-羧酸和7-苯氧乙酰胺基-3-氯-3-头孢烯-4-羧酸。提供的7-酰胺基-3-卤代头孢菌素酸及其药用可接受的盐和酯是有价值的抗生素化合物,具有良好的治疗性能。