申请人:Mochida Pharmaceutical Co., Ltd.
公开号:US04840945A1
公开(公告)日:1989-06-20
The present invention relates to novel cephalosporin derivatives, processes for preparing thereof, compositions for preventing and/or treating infectious diseases which comprise the novel cephalosporin derivatives as active components, and the intermediate compounds in the synthesis of cephalosporin derivatives and processes for producing thereof. The present invention is based on the selection of groups containing a condensed heterocyclic ring, particularly a triazolopyrimidine ring or a thiadiazolopyrimidine ring, as substituents at the 3-position of the cephem skeleton, and of groups containing a catechol moiety, particularly a catechol carboxymethyloxyimino moiety or a catechol carboxyimino moiety, as substituents at the 7-position of the cephem skeleton. The compounds of the present invention containing the aforementioned substituents have a strong antibacterial activity against Gram-negative bacteria and also against Gram-positive bacteria including methicillin-resistant Staphylococcus aureus. These compounds are extremely useful for the treatment of infectious diseases.
本发明涉及新型头孢菌素衍生物,其制备方法,包含新型头孢菌素衍生物作为活性成分的预防和/或治疗传染病的组合物,以及头孢菌素衍生物合成中的中间化合物和其生产方法。本发明基于在头孢菌素骨架的3位选择含有紧凑杂环环,特别是三唑嘧啶环或噻二唑嘧啶环的基团,作为取代基,以及在头孢菌素骨架的7位选择含有邻苯二酚基团,特别是邻苯二酚羧甲氧基亚胺基团或邻苯二酚羧亚胺基团作为取代基。本发明中含有上述取代基的化合物对革兰氏阴性细菌和包括耐甲氧苄青霉素金黄色葡萄球菌在内的革兰氏阳性细菌具有强大的抗菌活性。这些化合物对于治疗传染病非常有用。