.beta.-lactamase inhibitory composition
    2.
    发明授权
    .beta.-lactamase inhibitory composition 失效
    β-内酰胺酶抑制组合物

    公开(公告)号:US4725591A

    公开(公告)日:1988-02-16

    申请号:US576776

    申请日:1984-02-03

    摘要: Compounds having one or two substituents at the 3-position, represented by the general formula ##STR1## wherein R.sub.1 is an optionally acylated or protected amino group and X is hydrogen atom or methoxy group, or a pharmaceutically acceptable salt thereof; when used either alone or in combination with a .beta.-lactam antibiotic, show excellent .beta.-lactamase inhibitory activity and can be used as drugs for use in humans and domestic animals.

    摘要翻译: 其中R 1为任选酰化或保护的氨基,X为氢原子或甲氧基,或其药学上可接受的盐,其通式为(I)表示的具有一个或两个3-位取代基的化合物。 当单独使用或与β-内酰胺抗生素组合使用时,显示出优异的β-内酰胺酶抑制活性,可用作人和家畜使用的药物。

    3-Heterocyclic substituted cephem compounds
    7.
    发明授权
    3-Heterocyclic substituted cephem compounds 失效
    3-杂环取代的头孢烯化合物

    公开(公告)号:US4182866A

    公开(公告)日:1980-01-08

    申请号:US684738

    申请日:1976-05-10

    CPC分类号: C07D501/20

    摘要: Novel cephem compounds having a group of the formula at the 3-position thereof: ##STR1## wherein X represents oxygen, sulfur or imino, which may be substituted; and B represents hydrogen or a hydroxyl, amino, mercapto or hydrocarbon group, which groups may be substituted, can be prepared by reacting a 3-formylcephem compound with a hydrazine compound of the formula: ##STR2## wherein the symbols have the same meanings as above, and subjecting the thus obtained compound to an oxidative ring-closure reaction. The objective compounds are found to have a broad antimicrobial spectrum and, in particular, are effective against gram-negative bacteria including Escherichia Coli, Klebsiella pneumoniae, Proteus vulgaris, Proteus mirabilis, Proteus rettgerii, as well as gram positive ones, and have low-toxity. Thus, these compounds may be used for antimicrobial agents in therapeutical purpose.

    摘要翻译: 在3-位具有下式基团的新型头孢烯化合物:其中X表示可被取代的氧,硫或亚氨基; 并且B表示氢或可以被取代的羟基,氨基,巯基或烃基,可以通过使3-甲酰基头孢烯化合物与下式的肼化合物反应来制备:其中符号具有相同的含义 并将由此得到的化合物进行氧化闭环反应。 发现目标化合物具有广泛的抗菌谱,特别是对革兰氏阴性细菌有效,包括大肠杆菌,肺炎克雷伯菌,普通变形杆菌,奇异变形杆菌,革兰氏阳性菌以及革兰氏阳性细菌, 毒性 因此,这些化合物可以用于治疗目的的抗微生物剂。