The invention provides a new enantioselective process for the preparation of (S)-pregabalin, or a pharmaceutical acceptable addition acid salt comprising: acid hydrolysis of the dioxolan ring of a chiral compound of general formula (I) to obtain compound of general formula (II); oxidation of compound (II) to obtain a compound of general formula (III) and transforming compound (III) into compound of general formula (IV); subjecting compound (IV) to basic hydrolysis to obtain a compound of general formula (V) which is reduced to obtain enantiomerically pure S-pregabalin. The invention also provides new chiral intermediates involved in the process.
本发明提供了一种新的对映选择性工艺,用于制备(S)-
普瑞巴林,或其药物可接受的酸盐,包括:对手性化合物(I)的
二氧六环环的酸
水解,以获得通式(II)的化合物;将化合物(II)
氧化,以获得通式(III)的化合物,并将化合物(III)转化为通式(IV)的化合物;将化合物(IV)进行碱性
水解,以获得通式(V)的化合物,然后还原化合物(V)以获得对映纯的S-
普瑞巴林。本发明还提供了涉及该过程的新手性
中间体。