The present invention relates to a production method of (R)-3-hydroxy-3-(2-phenylethyl)hexanoic acid which comprises optical resolution of racemic 3-hydroxy-3-(2-phenylethyl)hexanoic acid with an optically active amine of the formula (VIII)
1
wherein R
2
is 3,4-dimethoxyphenyl or 2-chlorophenyl. According to the present invention, (R)-3-hydroxy-3-(2-phenylethyl)hexanoic acid useful as a starting material of a pharmaceutical agent can be efficiently produced with a high optical purity and a relatively high total yield.
本发明涉及(R)-3-羟基-3-(2-苯乙基)
己酸的生产方法,包括用具有光学活性的式(VIII)中的
氨基对混合的3-羟基-3-(2-苯乙基)
己酸进行光学分辨,其中R2为3,4-二
甲氧基苯基或2-
氯苯基。根据本发明,作为制药剂的起始物质(R)-3-羟基-3-(2-苯乙基)
己酸可以高效地生产,具有高光学纯度和相对较高的总产率。