申请人:Sandoz AG
公开号:US20160176818A1
公开(公告)日:2016-06-23
The present invention relates to a process for preparing silodosin with high optical purity up to 99.9% enantiomeric excess (e.e.) or above. The process makes use of a method step, in which the enantiomers contained in a racemic mixture of a compound represented by the general formula V: wherein * denotes the asymmetric center, R
1
is a protecting group, and R
2
is cyano or carbamoyl, are separated.
本发明涉及一种制备高光学纯度硅唑洛新的方法,其对映体纯度可达99.9%对映异构体过量(e.e.)或以上。该方法利用一步方法,其中分离含有化合物V的外消旋混合物中的对映体,化合物V的一般式表示为:*表示不对称中心,R1是保护基,R2是氰基或氨基甲酰基。