Process for the preparation of intermediates for the synthesis of diltiazem
    3.
    发明公开
    Process for the preparation of intermediates for the synthesis of diltiazem 失效
    一种用于制备中的中间体的对地尔硫的合成过程。

    公开(公告)号:EP0353538A2

    公开(公告)日:1990-02-07

    申请号:EP89113135.1

    申请日:1989-07-18

    CPC分类号: C07C319/28 C07C323/56

    摘要: A process for the preparation of (2S,3S)-threo-2-hydroxy-3-(2-­aminophenylthio)-3-(4-methoxyphenyl)-propionic acid by resolution of the racemic mixture is described.
    The resolution is carried out by using as resolving agent (1S,2S)­-threo-1-phenyl-2-amino-1,3-propanediol or (1S,2S)-threo-1-(4-­methylthiophenyl)-2-amino-1,3-propanediol.

    摘要翻译: 描述了用于(2S,3S)的制备苏-2-羟基-3-(2aminophenylthio)一种方法-3-(4-甲氧基苯基)通过拆分外消旋混合物丙离子酸。 分辨率是通过使用作为拆解剂(1S,2S)中进行 - 苏-1-苯基-2-氨基-1,3-丙二醇或(1S,2S) - 苏1-(4-甲硫基苯基)-2- 氨基-1,3-丙二醇。

    Process for the preparation of intermediates for the synthesis of diltiazem
    5.
    发明公开
    Process for the preparation of intermediates for the synthesis of diltiazem 失效
    Verfahren zur Herstellung von Zwischenprodukten in der Synthese von Diltiazem。

    公开(公告)号:EP0355395A1

    公开(公告)日:1990-02-28

    申请号:EP89113136.9

    申请日:1989-07-18

    IPC分类号: C07D281/10

    CPC分类号: C07D281/10

    摘要: Compound of formula III, which is an intermediate in the synthesis of diltiazem, is prepared by N-alkylation of the corresponding N-H derivative with 2-dimethylaminoethanol in an inert solvant and in presence of methanesulphonyl chloride and a base.

    摘要翻译: 通过在惰性溶剂中和在甲磺酰氯和碱的存在下,用相应的N-H衍生物与2-二甲基氨基乙醇进行N-烷基化反应来制备式II化合物,其是合成地尔硫卓的中间体。 e