Cephem compounds
    2.
    发明授权
    Cephem compounds 失效
    头孢烯化合物

    公开(公告)号:US5389627A

    公开(公告)日:1995-02-14

    申请号:US145228

    申请日:1993-11-03

    CPC分类号: C07D501/00

    摘要: The present invention relates to novel cephem compounds having the formula: ##STR1## wherein, Q is a carbon or nitrogen atom; X is an oxygen atom, or a nitroalkyl or cyanoimine group, with the proviso that X cannot be an oxygen atom when Q is a carbon atom; R.sub.1 is a hydrogen atom, or a lower alkyl group, or a lower alkyl group which may be substituted by fluoro, or by a carboxylic group or an inorganic cation salt thereof; and R.sub.2 and R.sub.3 independently are a hydrogen atom or a lower alkyl group; or pharmaceutically acceptable salts thereof.The compounds of the present invention have potent antibacterial activities against gram-negative bacteria, especially Pseudomonas, and a longer half-life than conventional cephem compounds.

    摘要翻译: 本发明涉及具有下式的新的头孢烯化合物:其中Q是碳或氮原子; X是氧原子或硝基烷基或氰基亚胺基,条件是当Q是碳原子时X不能是氧原子; R1是氢原子或低级烷基,或可被氟取代的低级烷基,或其羧基或无机阳离子盐; R2和R3独立地为氢原子或低级烷基; 或其药学上可接受的盐。 本发明的化合物对革兰氏阴性细菌,特别是假单胞菌具有有效的抗菌活性,并且比常规头孢烯化合物具有更长的半衰期。