申请人:Takeda Chemical Industries, Ltd.
公开号:US04203899A1
公开(公告)日:1980-05-20
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. Also disclosed are novel thiazolylacetic acid compounds of the formula: ##STR2## wherein R.sup.1 represents amino, protected amino, hydroxyl or protected hydroxyl, R.sup.2 represents amino, protected amino, hydroxyl, protected hydroxyl or the group ##STR3## represents a group of the formula ##STR4## wherein R.sup.5 represents hydroxyl or lower alkoxy and R.sup.8 represents hydrogen or a halogen, or a salt, an ester or a reactive derivative thereof, and to processed for preparing these compounds. These latter compounds are useful as intermediates in the preparation of the novel cephem compounds.
式为:##STR1## 其中R.sup.1代表氨基或羟基,可以是保护基;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,或其药学上可接受的盐或酯,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都有效,特别是通过口服给药,可用作动物包括人类的各种细菌感染的治疗剂。还公开了新型噻唑乙酸化合物的公式:##STR2## 其中R.sup.1代表氨基,保护氨基,羟基或保护羟基;R.sup.2代表氨基,保护氨基,羟基,保护羟基或##STR3##代表公式##STR4##的基团,其中R.sup.5代表羟基或低级烷氧基,R.sup.8代表氢或卤素,或其盐,酯或反应衍生物,并提供制备这些化合物的方法。这些后者化合物在制备新型头孢菌素化合物的过程中是有用的中间体。