Methods for the preparation of Drospirenone and intermediates thereof
    4.
    发明公开
    Methods for the preparation of Drospirenone and intermediates thereof 有权
    HerstellungsverfahrenfürDrospirenon und Zwischenprodukte davon

    公开(公告)号:EP2415778A1

    公开(公告)日:2012-02-08

    申请号:EP10171743.7

    申请日:2010-08-03

    申请人: Newchem S.p.A.

    IPC分类号: C07J53/00

    摘要: The invention relates to a process for the preparation of Drospirenone in high yields and purity starting from a compound of formula 2

    wherein R is a hydroxyl protective group as defined in the claims, through a sequence of oxidation, deprotection, lactonization and water elimination steps, and wherein the steps of oxidation and lactonization are performed with 1,3,5-trichloro 1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (trichloroisocyanuric acid, TCCA) or 1,3-dichloro-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione (dichloroisocyanuric acid, DCCA) or an alkaline metal salt thereof such as the sodium salt dihydrate (DCCA sodium salt) or 1-hydroxyl,2-benziodoxol-3(777)-one 1-oxide (IBX). New synthetic intermediates useful for the synthesis of Drospirenone are disclosed, too.

    摘要翻译: 本发明涉及一种以高产率和纯度制备屈螺酮的方法,其起始于式2化合物,其中R是如权利要求中所定义的羟基保护基,通过氧化,去保护,内酯化和除水步骤的顺序, 并且其中氧化和内酯化步骤用1,3,5-三氯1,3,5-三嗪-2,4,6-(1H,3H,5H) - 三酮(三氯异氰尿酸,TCCA)或1, 3-二氯-1,3,5-三嗪-2,4,6-(1H,3H,5H) - 三酮(二氯异氰脲酸,DCCA)或其碱金属盐如钠盐二水合物(DCCA钠盐) 或1-羟基,2-苯碘代醇-3(777) - 酮1-氧化物(IBX)。 还公开了可用于合成Drospirenone的新合成中间体。

    Process for the preparation of Drospirenone
    6.
    发明公开
    Process for the preparation of Drospirenone 有权
    HerstellungsverfahrenfürDrospirenon

    公开(公告)号:EP2019114A1

    公开(公告)日:2009-01-28

    申请号:EP07014742.6

    申请日:2007-07-26

    申请人: Newchem S.p.A.

    IPC分类号: C07J53/00

    CPC分类号: C07J53/008

    摘要: A process for the preparation of Drospirenone (I) according to the following scheme

    wherein the substituent R is defined in the description. The process improves the product yield and purity by reducing the formation of undesired side-products and is particularly convenient for industrial-scale manufacturing.

    摘要翻译: 根据以下方案制备屈螺酮(I)的方法,其中取代基R在说明书中定义。 该方法通过减少不期望的副产物的形成来提高产物的产率和纯度,并且对于工业规模的制造是特别方便的。