PROCESS FOR THE PREPARATION OF (S)(+)-3-(AMINOMETHYL)-5-METHYLHEXANOIC ACID
申请人:Riva Sergio
公开号:US20080311635A1
公开(公告)日:2008-12-18
A process for the preparation of (S)(+)-3-(aminomethyl)-5-methylhexanoic acid (pregabalin) of formula (I) or a salt thereof,
comprising the reaction of a compound of formula (II)
with an alcohol ROH, in the presence or absence of enzyme, to give a compound of formula (III) as herein defined
the transformation of a compound of formula (III) into a compound of formula (VI) or (VIII) as herein defined,
and the subsequent hydrolysis of a compound of formula (VI) or (VIII), to give pregabalin.