Methods for the preparation of enantiomerically pure azole compounds of formula I are disclosed. In particular resolution of a racemic mixture of a compound of formula I is performed by addition of a chiral acid, collection of the desired diastereomer followed by conversion of the salt into an enantiomerically pure form of the compound of formula I by treatment with a base or ion-exchange resin. Also disclosed is a method of resolving a racemic precursor of formula I followed by reaction of the enantiomerically pure precursor to form a compound of formula I.
本发明公开了制备式I手性纯的唑类化合物的方法。具体而言,通过添加手性酸对式I化合物的外消旋混合物进行拆分,收集所需的对映异构体,然后通过使用碱或离子交换
树脂将盐转化为式I化合物的手性纯形式。本发明还公开了一种通过拆分式I前体的外消旋混合物,然后反应手性纯前体形成式I化合物的方法。