申请人:Takeda Chemical Industries, Ltd.
公开号:US04098888A1
公开(公告)日:1978-07-04
Novel cephem compounds of the formula; ##STR1## wherein R.sup.1 represents amino or hydroxyl group which may be protected, R.sup.2 represents amino or hydroxyl group or a group convertible into these groups, R.sup.3 represents hydrogen or methoxy group or a group convertible into methoxy group, R.sup.4 represents hydrogen or a residue of a nucleophilic compound and R.sup.8 represents hydrogen or a halogen, or a pharmaceutically acceptable salt or ester thereof, have strong antibiotic properties against a wide variety of microorganisms including gram-positive bacteria as well as gram-negative ones, especially by oral administration and can be used as therapeutic agent for various bacterial infections of animals including human beings.
新型头孢菌素化合物的化学式如下;##STR1## 其中R.sup.1代表氨基或羟基,可以被保护,R.sup.2代表氨基或羟基或可转化为这些基团的基团,R.sup.3代表氢或甲氧基或可转化为甲氧基的基团,R.sup.4代表氢或亲核化合物的残基,R.sup.8代表氢或卤素,或其药用可接受的盐或酯,具有强大的抗生素特性,对包括革兰氏阳性细菌和革兰氏阴性细菌在内的各种微生物具有抗性,特别是经口服给药,可用作动物包括人类的各种细菌感染的治疗剂。