申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04284631A1
公开(公告)日:1981-08-18
This invention relates to new cephem compounds. More particularly, it relates to new 7-substituted-3-cephem-4-carboxylic acid, its pharmaceutically acceptable salt and pharmaceutically acceptable bioprecursor thereof, which have antimicrobial activities, and processes for preparation thereof, to intermediate for preparing the same and processes for preparation thereof, and to pharmaceutical composition comprising the same and methods of using the same prophylactically and therapeutically for treatment of infectious diseases in human beings and animals. The cephem compounds of this invention include the compound represented by the formula (I): ##STR1## wherein R.sup.1 is amino or protected amino, R.sup.2 is lower alkyl substituted with a substituent selected from the groups consisting of cyano, carbamoyl, hydroxy, protected hydroxy, amino, protected amino, lower alkoxy, lower alkylthio, lower alkenylthio, aryl which may have one or more suitable substituent(s), and heterocyclic group which may have one or more suitable substituent(s), R.sup.3 is carboxy or protected carboxy, and R.sup.4 is hydrogen or halogen, and their pharmaceutically acceptable salts or pharmaceutically acceptable bioprecursors thereof.
本发明涉及新的头孢菌素化合物。更具体地说,涉及新的7-取代-3-头孢烷-4-羧酸及其药学上可接受的盐和生物前体,其具有抗微生物活性,以及其制备方法,制备它们的中间体及其制备方法,以及包含它们的制药组合物和用于人类和动物感染性疾病的预防和治疗的方法。本发明的头孢菌素化合物包括由式(I)表示的化合物:##STR1##其中R.sup.1是氨基或受保护的氨基,R.sup.2是低碳基,其被取代为从氰基,氨基甲酰基,羟基,受保护的羟基,氨基,受保护的氨基,低烷氧基,低烷基硫基,低烯基硫基,苯基或其可能具有一个或多个适当的取代基的杂环基中选择的取代基,R.sup.3是羧基或受保护的羧基,而R.sup.4是氢或卤素,以及它们的药学上可接受的盐或药学上可接受的生物前体。