The present invention provides a chemoenzymatic process for the preparation of (R)-GABOB and (R)-carnitine employing lipase-mediated resolution of 3-hydroxy-4-tosyloxybutanenitrile as the key step. The drawing accompanying this specification represents the preparation of racemic 3-hydroxy-4-tosyloxybutanenitrile, its lipase-mediated kinetic resolution and its successful application in the preparation of (R)-GABOB and (R)-carnitine.
本发明提供了一种
化学酶法制备(R)-GABOB和(R)-肉碱的过程,其中利用
脂肪酶介导的3-羟基-4-对
甲苯磺酰氧基
丁腈的分离是关键步骤。本说明书附带的图示表示了混合型3-羟基-4-对
甲苯磺酰氧基
丁腈的制备,其
脂肪酶介导的动力学分离以及在制备(R)-GABOB和(R)-肉碱方面的成功应用。