申请人:API CORPORATION
公开号:US20140127762A1
公开(公告)日:2014-05-08
The present invention aims to provide an industrial method practically suitable for producing optically active α-substituted prolines from an acyclic ketone compound by a small number of steps under mild conditions. The present invention relates to a production method of an optically active α-substituted proline (4) and/or an optically active α-substituted prolinamide (5), including (a) reacting an acyclic ketone compound (1) with at least one selected from ammonia, an ammonium salt, primary amine and a salt of primary amine, and a cyanating agent to give a cyclic nitrogen-containing compound (2), (b) hydrating the cyclic nitrogen-containing compound (2) to give an α-substituted prolinamide (3), and (c) resolving the α-substituted prolinamide (3) by one or more of (d) enzymatical hydrolysis, (e) resolution by diastereomeric salt formation, and (f) separation by column chromatography.
本发明旨在提供一种工业方法,以在温和条件下通过少量步骤从非环状酮化合物中生产光学活性α-取代脯氨酸的方法。本发明涉及一种光学活性α-取代脯氨酸(4)和/或光学活性α-取代脯氨酰胺(5)的生产方法,包括以下步骤:(a)将非环状酮化合物(1)与氨、铵盐、一级胺和一级胺盐和氰化试剂中的至少一种反应,得到环状含氮化合物(2);(b)使环状含氮化合物(2)水合,得到α-取代脯氨酰胺(3);(c)通过(d)酶解水解、(e)对映异构盐形成的分离和/或(f)柱层析分离中的一种或多种方法来分离α-取代脯氨酰胺(3)。