7-Carboxymethoxyphenylacetamido-3-cephem derivatives and antibacterial
preparations containing the same
    7.
    发明授权
    7-Carboxymethoxyphenylacetamido-3-cephem derivatives and antibacterial preparations containing the same 失效
    7-羧甲基苯乙酰氨基-3-头孢烯衍生物和含有它们的抗菌制剂

    公开(公告)号:US4546176A

    公开(公告)日:1985-10-08

    申请号:US544406

    申请日:1983-10-20

    CPC分类号: C07D405/12 C07D311/22

    摘要: 7-Carboxymethoxyphenylacetamido-3-cephem derivatives represented by the formula ##STR1## wherein R.sub.1 means hydroxy, C.sub.1 -C.sub.4 alkanoyloxy or C.sub.1 -C.sub.4 alkoxycarbonyloxy, R.sub.2 is hydrogen or methoxy, R.sub.3 denotes C.sub.1 -C.sub.4 alkanoyloxy, substituted or unsubstituted nitrogen-containing heterocyclic-thio or substituted or unsubstituted pyridinium with a proviso that, when R.sub.3 denotes the substituted or unsubstituted pyridinium, R.sub.3 forms an intramolecular salt with the carboxy at the 4-position of the cephem nucleus, and A is a group of the following formula: ##STR2## in which R.sub.4 and R.sub.5 are individually hydrogen or C.sub.1 -C.sub.4 alkyl, and their pharmaceutically acceptable salts, exhibit excellent anti-bacterial activities against Gram-negative bacteria, particularly, Pseud. aeruginosa, Kleb. pneumoniae, Ser. marcescens and the like.

    摘要翻译: 其中R 1表示羟基,C 1 -C 4烷酰氧基或C 1 -C 4烷氧羰基氧基,R 2为氢或甲氧基,R 3表示C 1 -C 4烷酰氧基,取代或未取代的含氮杂环基 硫代或取代或未取代的吡啶鎓,条件是当R3表示取代或未取代的吡啶鎓时,R3与头孢烯核的4位上的羧基形成分子内的盐,A是下式的基团: 其中R 4和R 5独立地为氢或C 1 -C 4烷基及其药学上可接受的盐,对抗革兰氏阴性细菌,特别是Pseude显示出优异的抗细菌活性。 铜绿假单胞菌 肺炎支原体 粘液囊等。