[EN] METHODS FOR THE PREPARATION OF DROSPIRENONE AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉS DE PRÉPARATION DE LA DROSPIRÉNONE ET DE SES INTERMÉDIAIRES
申请人:NEWCHEM S P A
公开号:WO2012016860A1
公开(公告)日:2012-02-09
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-hydroxy - 1,2-benziodoxo1-3(1H)-one 1-oxide (IBX). New synthetic intermediates useful for the synthesis of Drospirenone are disclosed, too.
该发明涉及一种从式(2)中R为在权利要求中定义的羟基保护基的化合物出发,通过一系列氧化、去保护、内酯化和脱水步骤制备Drospirenone的高产率和纯度的方法,其中氧化和内酯化步骤是使用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(二氯异氰尿酸,DCCA)或其碱金属盐如二水合物的钠盐(DCCA钠盐)或1-羟基-1,2-苯碘氧1-3(1H)-酮1-氧化物(IBX)来进行的。还公开了用于合成Drospirenone的新合成中间体。