ROSUVASTATIN CALCIUM INTERMEDIATE AND METHOD FOR PREPARING THE SAME
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    发明申请
    ROSUVASTATIN CALCIUM INTERMEDIATE AND METHOD FOR PREPARING THE SAME 有权
    ROSUVASTATIN钙中间体及其制备方法

    公开(公告)号:US20120310000A1

    公开(公告)日:2012-12-06

    申请号:US13587913

    申请日:2012-08-16

    IPC分类号: C07F7/18

    摘要: A method for preparing a rosuvastatin calcium intermediate, including a) contacting a halogenated ethene with magnesium metal to obtain a halogenated ethene Grignard reagent, and carrying out a Grignard reaction between the halogenated ethene Grignard reagent and R-epichlorohydrin; b) adding sodium cyanide for carrying out a nucleophilic substitution reaction; c) adding alcohol for carrying out an alcoholysis reaction; d) adding a basic solvent for carrying out protection of a first hydroxyl group; e) selectively oxidizing a second hydroxyl group; and f) adding triphenylphosphine in alkaline condition for carrying out a Wittig reaction.

    摘要翻译: 一种制备瑞舒伐他汀钙中间体的方法,包括:a)将卤代乙烯与镁金属接触以获得卤化乙烯格氏试剂,并在卤代乙烯格氏试剂和R-表氯醇之间进行格氏反应; b)加入氰化钠进行亲核取代反应; c)加醇进行醇解反应; d)加入用于进行第一羟基保护的碱性溶剂; e)选择性氧化第二羟基; 和f)在碱性条件下加入三苯基膦进行Wittig反应。