申请人:MEIJI SEIKA KAISHA LTD.
公开号:EP0432042A2
公开(公告)日:1991-06-12
A new class of cephalosporin derivatives is provided, which is useful as antibacterial agent to be particularly suitable for oral administrations in mammals including man, and which is represented by general formula (I)
wherein R1 is a hydrogen atom or a lower alkyl group; R2 is a hydrogen atom or an ester-forming group capable of being cleaved easily with an esterase existing in the digestive tracts; n is an integer of zero or 1; Z is a saturated heterocyclic group containing one or two oxygen atoms as the hetero-atoms with or without one or more lower alkyl substituents, or a pharmaceutically acceptable salt thereof.
本发明提供了一类新的头孢菌素衍生物,可用作抗菌剂,特别适用于包括人在内的哺乳动物的口服给药,其通式为(I)
其中 R1 是氢原子或低级烷基;R2 是氢原子或能被消化道中存在的酯酶轻易裂解的酯形成基团;n 是 0 或 1 的整数;Z 是含有一个或两个氧原子作为杂原子的饱和杂环基团,带有或不带有一个或多个低级烷基取代基,或其药学上可接受的盐。