申请人:Daiichi Sankyo Company, Limited
公开号:EP2980067A1
公开(公告)日:2016-02-03
The problem to be solved is to provide a method for efficiently producing compounds (1) and (1a) that are important intermediate compounds in the production of FXa inhibitors (X) and (X-a). The solutions thereto are a method for producing a compound represented by the formula (8d) using a stereoselective intramolecular cyclization reaction, and a method for producing a compound (If) or a salt thereof, or a hydrate thereof, which is characterized by desulfonylation of the compound (8d). In each formula, R4a represents a C1-C6 alkyl group, a benzyl group, etc.
要解决的问题是提供一种高效生产化合物(1)和(1a)的方法,这些化合物是生产 FXa 抑制剂(X)和(X-a)的重要中间化合物。其解决方案是利用立体选择性分子内环化反应生产式(8d)代表的化合物的方法,以及生产化合物(If)或其盐或其水合物的方法,其特征在于化合物(8d)的脱磺化。在各式中,R4a 代表 C1-C6 烷基、苄基等。