申请人:Kamada Atsushi
公开号:US20100022778A1
公开(公告)日:2010-01-28
It is an object of the present invention to provide a process for the production on an industrial scale of a compound (1) or a salt thereof. There is provided a process for the production of compound (1) represented by the formula or a salt thereof: (wherein R1 and R3 independently represents a hydrogen atom or a methyl group), the process comprising the steps of: (a) reacting together a compound (3T) represented by the formula: (wherein X1 represents a leaving group, and R1 and R3 are defined as above) and (2,2-dimethyl-1,3-dioxan-5-yl)methanol represented by the formula or a salt thereof: so as to produce a compound (2T) represented by the formula (wherein R1 and R3 are defined as above); and (b) reacting the compound represented by above formula (2T) with an oxidizing agent.
本发明的目的是提供一种工业规模生产化合物(1)或其盐的方法。提供一种生产化合物(1)或其盐的方法,化合物(1)的结构式如下:(其中R1和R3分别表示氢原子或甲基基团),该方法包括以下步骤:(a)将化合物(3T)和(2,2-二甲基-1,3-二氧杂环戊烷-5-基)甲醇反应,化合物(3T)的结构式如下:(其中X1表示离去基团,R1和R3如上定义),以产生化合物(2T),其结构式如下:(其中R1和R3如上定义);(b)将上述结构式为(2T)的化合物与氧化剂反应。