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 synthesis of cephalosporin derivative and processes for producing thereof are disclosed.
The novel cephalosporin derivatives contain condensed heterocyclic groups, particularly a triazolopyrimidine ring or a thiadiazolopyrimidine ring as substituents at the 3-position of the cephem skeleton, and a hydroxyimino, an alkyloxyimino or an acyloxyimino moiety as substituents at the 7-position of the cephem skeleton.
These compounds have a strong antibacterial activity against gram-negative bacteria and also against gram-positive bacteria including methicillin-resistant Staphylococcus aureus. They are extremely useful for the treatment of infectious diseases.
本发明公开了新型
头孢菌素衍
生物、其制备工艺、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,以及合成
头孢菌素衍
生物的中间化合物及其生产工艺。
新型
头孢菌素衍
生物含有缩合杂环基团,特别是在头孢骨架的 3 位上含有三唑
嘧啶环或
噻二唑嘧啶环作为取代基,在头孢骨架的 7 位上含有羟基亚
氨基、烷
氧基亚
氨基或酰
氧基亚
氨基作为取代基。
这些化合物对革兰氏阴性菌和革兰氏阳性菌(包括耐
甲氧西林金黄色葡萄球菌)具有很强的抗菌活性。它们对治疗传染病非常有用。