Process for the preparation of (S)-(+)-pregabalin (1) that racemic pregabalin (2) was solved in water, reacted with a chiral a-hydroxy-carboxylic acid or a mixture of chiral α-hydroxy-carboxylic acids in desired case in the presence of an achiral acid, (S)-(+)-pregabalin (1) was deliberated from the obtained diastereomer salt and in desired case the residue of racemic pregabalin (2) was regenerated.
                            制备(S)-(+)-pregabalin (1)的过程是:将外消旋的pregabalin (2)溶解在
水中,与手性α-羟基
羧酸或手性α-羟基
羧酸混合物在无手性酸存在下反应,通过得到的对映体盐分离得到(S)-(+)-pregabalin (1),在需要的情况下再生产剩余的外消旋pregabalin (2)。