申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:US08143427B2
公开(公告)日:2012-03-27
It is to provide a method for efficiently producing an aminoacetylpyrrolidinecarbonitrile derivative which is useful as a DPP-IV inhibitor. It is a method for producing an aminoacetylpyrrolidinecarbonitrile derivative represented by the formula (2):
(in the formula, A and R1 are as defined in the following), comprising allowing an acid to act on an aminoacetylpyrrolidinecarboxamide derivative represented by the formula (1):
(in the formula, A represents CH2, CHF or CF2; and R1 represents a secondary amino group which may be substituted), and then allowing a dehydrating agent to act thereon.
本发明提供了一种有效生产作为DPP-IV抑制剂有用的氨基乙酰吡咯烷腈衍生物的方法。该方法包括让酸作用于由式(1)表示的氨基乙酰吡咯烷甲酰衍生物(其中,A和R1如下所定义),然后让脱水剂作用于该衍生物,从而生产由式(2)表示的氨基乙酰吡咯烷腈衍生物。
(式中,A代表CH2、CHF或CF2;R1代表可被取代的二级氨基基团)