7.beta.-Phosphoramido-7.alpha.-methoxycephalosporanic acid derivatives
    6.
    发明授权
    7.beta.-Phosphoramido-7.alpha.-methoxycephalosporanic acid derivatives 失效
    7 {62-磷酰胺基-7 {60-甲氧基头孢烷酸衍生物

    公开(公告)号:US4145540A

    公开(公告)日:1979-03-20

    申请号:US708755

    申请日:1976-07-26

    摘要: Cephem and penam compounds having a partial structure of formula (II): ##STR1## wherein R.sup.1 and R.sup.2, respectively, represent a hydrocarbon group which is attached to P, either directly or through an oxygen atom, and which may optionally be substituted, and R.sup.3 is a hydrocarbon residue, are useful as intermediates for synthetic penicillins and cephalosporins, which in turn are useful as antibiotics or intermediates for some other synthetic penicillins and cephalosporins having antibiotic activity. To the 6- or 7-amino group of these penam or cephem compounds an objective acyl group can be introduced to give 6- or 7-acyl amino compound in a good yield, without isomerization of 6.alpha.-or 7.alpha.-substituent OR.sup.3 of the penam or cephem compounds.

    摘要翻译: 具有式(II)的部分结构的头孢烯和缓释化合物:其中R 1和R 2分别表示直接或通过氧原子与P连接的烃基,并且其可任选地为 并且R3是烃残基,可用作合成青霉素和头孢菌素的中间体,其又可用作一些其它合成青霉素和具有抗生素活性的头孢菌素的抗生素或中间体。 对于这些Penam或头孢烯化合物的6-或7-氨基,可以引入目的酰基以获得6-或7-酰基氨基化合物的良好产率,而不使6α-或7α-取代基OR3异构化 半胱氨酸或头孢烯化合物。

    Cephalosporins
    8.
    发明授权
    Cephalosporins 失效
    头孢菌素

    公开(公告)号:US4008227A

    公开(公告)日:1977-02-15

    申请号:US483083

    申请日:1974-06-25

    CPC分类号: C07D501/36

    摘要: A compound of the formula: ##STR1## wherein R.sup.1 represents mandeloyl or 2-(3-sydnone)-acetyl group and R.sup.2 represents a hydrogen atom, a halogen, an alkyl or an alkoxyl group, or a pharmaceutically accetable salt thereof, is found to have a broad antimicrobial spectrum and, in particular, effective against gram-negative bacteria as well as gram-positive ones. Examples thereof include 7-[D-(-)-mandelamido]-3-[6'-(3'-methylpyridazinyl)-thio-methyl]-3-cephem-4-carboxylic acid 2'-oxide, 7-[D-(-)-mandelamido]-3-[6'-(3'-methoxypyridazinyl)-thiomethyl]-3-cephem-4-carboxylic acid 1'-oxide, and 7-[2'-(3'-sydnone)acetamido]-3-[6"-(3"-methylpyridazinyl)-thiomethyl]-3-cephem-4-carboxylic acid 2"-oxide.

    摘要翻译: 其中R1表示戊烯基或2-(3-硅氧烷) - 乙酰基,R2表示氢原子,卤素,烷基或烷氧基,或其药学上可接受的盐的下式的化合物: 具有广泛的抗菌谱,特别是对革兰氏阴性细菌以及革兰氏阳性细菌有效。 其实例包括7- [D - ( - ) - 扁桃酰氨基] -3- [6' - (3'-甲基哒嗪基) - 硫代甲基] -3-头孢烯-4-羧酸2'-氧化物,7- [ D - ( - ) - 扁桃酰氨基] -3- [6' - (3'-甲氧基哒嗪基) - 硫甲基] -3-头孢烯-4-羧酸1'-氧化物和7- [2' - (3'- sydnone)乙酰氨基] -3- [6“ - (3” - 甲基哒嗪基) - 硫甲基] -3-头孢烯-4-羧酸2“ - 氧化物。