Process of preparing cephalosporanic acid ester derivatives
    2.
    发明授权
    Process of preparing cephalosporanic acid ester derivatives 失效
    制备头孢菌酸酯衍生物的方法

    公开(公告)号:US4137407A

    公开(公告)日:1979-01-30

    申请号:US775841

    申请日:1977-03-09

    IPC分类号: C07D501/04

    CPC分类号: C07D501/22 C07D501/04

    摘要: A process of preparing a .DELTA..sup.3 -cephalosporanic acid ester derivative which comprises reacting a cephalosporanic acid sulfoxide ester derivative with thionyl halide or a phosphorous halide.The compounds prepared by the process of this invention are useful as intermediate compounds for preparing cephalosporin antibiotics and the compounds themselves are also potential antibacterials.

    摘要翻译: 一种制备DELTA 3-头孢菌酸酯衍生物的方法,其包括使头孢菌酸亚砜酯衍生物与亚硫酰卤或卤化磷反应。

    Process for the preparation of the cephalosporanic acid derivative
    4.
    发明授权
    Process for the preparation of the cephalosporanic acid derivative 失效
    制备头孢菌酸衍生物的方法

    公开(公告)号:US3935198A

    公开(公告)日:1976-01-27

    申请号:US426108

    申请日:1973-12-19

    CPC分类号: C07D501/10

    摘要: A process for the preparation of cephalosporanic acid derivatives represented by the formula ##SPC1##Wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a univalent group other than a hydrogen atom, said R.sub.1 and R.sub.2 may be combined to form a divalent group and A represents a divalent group represented by the formulae ##SPC2##Wherein R.sub.3 represents a hydrogen atom or a group which does not contribute to the reaction, which comprises heating a penicillin sulfoxide derivative represented by the formula ##SPC3##Wherein R.sub.1, R.sub.2 and R.sub.3 are as defined above.The cephalosporanic acid derivatives prepared by the process of this invention are useful as a starting material for the preparation of antibacterials.

    摘要翻译: 制备由式WHEREIN R1和R2表示的头孢烷酸衍生物的方法可以相同或不同,分别表示氢原子以外的一价基团,所述R 1和R 2可以组合形成二价基团, A表示由下式表示的二价基团,其中R 3表示氢原子或对反应无贡献的基团,其包括加热由式WHEREIN R1表示的青霉素亚砜衍生物,R2和R3如上所定义。