[EN] PROCESS FOR SYNTHESIS OF (S) - PREGABALIN<br/>[FR] PROCÉDÉ DE SYNTHÈSE DE LA (S)-PRÉGABALINE
申请人:LUPIN LTD
公开号:WO2012059797A1
公开(公告)日:2012-05-10
Improved process for the synthesis of (S)-pregabalin having more than 99% ee through (S) 3-cyano-5-methyl-hexanoic acid has been developed. In addition to above, a novel process for resolution of (RS) - 3-cyano-5-methyl-hexanoic acid through diastereomeric salt formation with cinchonidine to obtain (S) - 3-cyano-5-methyl-hexanoic acid in high yield and high optical purity has been developed and furthermore process for recovery/ reuse of cinchonidine is also developed to improve the overall process efficiency.
已开发出一种通过(S) 3-氰基-5-甲基己酸合成具有超过99% ee的(S)-盐酸普拉巴林的改进工艺。除此之外,还开发了一种通过辛可尼丁与(RS)-3-氰基-5-甲基己酸形成对映异构盐的新工艺,以高产率和高光学纯度获得(S)-3-氰基-5-甲基己酸,并进一步开发了辛可尼丁的回收/再利用工艺,以提高整体工艺效率。