The present invention relates to a process comprising hydrolysis or trans esterification of one of the two enantiomeric forms of a racemic or enantiomerically enriched ester of formula I or IV by a higher rate than the other by an enzyme to give an ester and a acid (III) or two different esters (V) and (VI) with different R groups both with increased enantiomeric purity and a esterification process of a racemic or enantiomerically enriched acid (VII) by an enzyme to give an ester and an acid both with increased enantiomeric purity.
                            本发明涉及一种过程,包括通过酶催化使得众所周知的两个对映异构体形式之一的外消旋或对映富集的I或IV式酯的
水解或酯交换反应速率比另一个更高,从而得到具有增加对映纯度的酯和酸(III)或具有不同R基团的两个不同酯(V)和(VI),以及通过酶催化的酯化过程,从而得到具有增加对映纯度的酯和酸的外消旋或对映富集的酸(VII)。