PROCESS FOR PREPARATION OF 5H-DIBENZO[A,D] CYCLOHEPTENE DERIVATIVES
    9.
    发明申请
    PROCESS FOR PREPARATION OF 5H-DIBENZO[A,D] CYCLOHEPTENE DERIVATIVES 有权
    制备5H-二苯并[A,D]环己基衍生物的方法

    公开(公告)号:US20080139848A1

    公开(公告)日:2008-06-12

    申请号:US11609075

    申请日:2006-12-11

    IPC分类号: C07C33/16 C07C211/31

    摘要: A process for preparation of protriptyline hydrochloride from 5-dihydrobenzocycloheptatriene of formula (1) by coupling with chloropropyl alcohol in the presence of excess n-butyl Lithium in tetrahydrofuran under inert atmosphere, followed by preparation of mesylate derivative of formula (3) and finally the nucleophilic displacement of the mesylate group by reacting methylamine solution in methanol to give protriptyline free base of the formula (4). Also the present process reveals the hydrochloride salt formation and purification of the same to give pure pharmaceutical grade protriptyline hydrochloride with impurities less than 0.1% w/w.

    摘要翻译: 在惰性气氛下,在四氢呋喃中,在过量的正丁基锂存在下,用氯丙醇与氯丙醇偶合制备式(1)的5-二氢苯并环庚三烯的方法,然后制备式(3)的甲磺酸酯衍生物, 通过使甲胺溶液在甲醇中反应,得到式(4)的无游离碱,从而亲核取代甲磺酸酯基。 此外,本发明方法显示盐酸盐形成和纯化,得到纯度为0.1%w / w的杂质的药物级羟基替康林盐酸盐。