1-Acyloxyalkyl esters of cephalosporin
    7.
    发明授权
    1-Acyloxyalkyl esters of cephalosporin 失效
    头孢菌素的1-芳氧基烷基酯

    公开(公告)号:US4725592A

    公开(公告)日:1988-02-16

    申请号:US637138

    申请日:1984-08-03

    CPC分类号: C07D501/36

    摘要: A compound of the formula: ##STR1## wherein R.sub.1 stands for n-propyl or isopropyl; and R.sub.2 stands for n-butyl, isobutyl, n-pentyl, n-hexyl or 2-ethylbutyl, or a pharmaceutically acceptable salt thereof, processes for preparing the same and a pharmaceutical composition thereof are provided. The compound can orally be applied as antibiotics having improved bioavailability.

    摘要翻译: 下式的化合物:其中R 1代表正丙基或异丙​​基; R2代表正丁基,异丁基,正戊基,正己基或2-乙基丁基,或其药学上可接受的盐,其制备方法及其药物组合物。 该化合物可口服施用,具有改善生物利用度的抗生素。

    7-Alpha-(2-aminothiazole)-acetamido-cephalosporins
    9.
    发明授权
    7-Alpha-(2-aminothiazole)-acetamido-cephalosporins 失效
    7-α-(2-氨基噻唑) - 乙酰氨基 - 头孢菌素

    公开(公告)号:US4080498A

    公开(公告)日:1978-03-21

    申请号:US534782

    申请日:1974-12-20

    摘要: A compound of the formula: ##STR1## wherein R.sup.1 represents hydrogen or an alkyl group, X represents oxygen or sulfur or a group of formula --NR.sup.2 (where R.sup.2 is hydrogen or an alkyl group and in the case of alkyl, it may form a ring jointed with R.sup.1), and Y represents acetoxy group or a group of formula --SR.sup.3 (where R.sup.3 is a nitrogen-containing heterocyclic group), or a pharmaceutically acceptable salt thereof, is found to have a broad antimicrobial spectrum and, in particular, effective against gram-negative bacteria including Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, Proteus morganii, as well as gram positive ones. Thus, these compounds may be used for antimicrobial agents in therapeutical purposes.

    摘要翻译: 下式的化合物:其中R 1表示氢或烷基,X表示氧或硫或式-NR 2基团(其中R 2是氢或烷基,在烷基的情况下可以形成 环与R 1连接),Y表示乙酰氧基或式-SR 3(其中R 3为含氮杂环基)基团或其药学上可接受的盐具有宽的抗菌谱,特别是, 对革兰氏阴性菌有效,包括大肠杆菌,肺炎克雷伯杆菌,普通变形杆菌,变形杆菌,以及革兰氏阳性菌。 因此,这些化合物可用于治疗目的的抗微生物剂。

    2-Oxoazetidine derivatives and production thereof
    10.
    发明授权
    2-Oxoazetidine derivatives and production thereof 失效
    2-氧代氮杂环丁啶衍生物及其制备

    公开(公告)号:US4427586A

    公开(公告)日:1984-01-24

    申请号:US321325

    申请日:1981-11-13

    摘要: 2-Oxoazetidine derivatives represented by the formula; ##STR1## wherein R.sup.1 stands for phthalimido group, benzyloxycarbonylamino group, a halogen on an alkyl group which may have hydroxyl group, R.sup.2 stands for hydrogen, an alkyl group, an alkylthio group or an arylthio group, and R.sup.3 and R.sup.4 independently stand for an acyl group or cyano group, and a method of preparing them, which is shown by the following reaction scheme; ##STR2## wherein R.sup.5 stands for a carboxyl-protective group, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are of the same meanings as defined above.This compound (I) can be utilized as intermediates for carba-2-penem compounds having excellent anti-bacterial activity and .beta.-lactamase inhibitory activity.

    摘要翻译: 由式表示的2-氧代氮杂环丁啶衍生物; (I)其中R1代表苯二甲酰亚氨基,苄氧基羰基氨基,可具有羟基的烷基上的卤素,R2代表氢,烷基,烷硫基或芳硫基,R3和R4独立地 代表酰基或氰基,及其制备方法,由以下反应方案表示; 其中,R5表示羧基保护基,R1,R2,R3,R4表示与上述相同的含义。 该化合物(I)可以用作具有优异的抗细菌活性和β-内酰胺酶抑制活性的carba-2-penem化合物的中间体。