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制备方法。本发明基于选择含有紧缩杂环环,特别是三唑
嘧啶环或
噻唑嘧啶环的基团,作为
头孢菌素骨架的3位取代基,以及含有
邻苯二酚基团,特别是
邻苯二酚羧甲氧基
亚胺基团或
邻苯二酚羧基
亚胺基团,作为
头孢菌素骨架的7位取代基。本发明中含有上述取代基的化合物对革兰氏阴性菌和包括
甲氧西林耐药
金黄色葡萄球菌在内的革兰氏阳性菌具有强烈的抗菌活性。这些化合物对于治疗传染病非常有用。