申请人:Mitsubishi Tanabe Pharma Corporation
公开号:EP2022782A1
公开(公告)日:2009-02-11
The present invention relates to a method for preparing a syn-form piperidine compound represented by general formula [I]:
wherein,
bold lines represent bonds in which substituents at positions 2 and 4 of a piperidine ring are in the syn configuration, and the other symbols have the same meaning as defined below, or a salt thereof,
comprising:
reducing a compound represented by general formula [II]:
wherein,
ring A represents an optionally substituted benzene ring,
R2 represents a hydrogen atom, an optionally substituted hydroxyl group, an optionally substituted amino group, an optionally substituted alkyl group, a substituted carbonyl group or a halogen atom, and
M represents an alkaline metal or hydrogen atom.
本发明涉及一种制备由通用式[I]表示的同构吡啶化合物的方法:其中,粗线表示吡啶环的2位和4位取代基处于同构构象,其他符号的含义如下定义,或其盐,包括:还原由通用式[II]表示的化合物:其中,环A表示一个可选择取代的苯环,R2表示氢原子、可选择取代的羟基、可选择取代的氨基、可选择取代的烷基、取代的羰基或卤素原子,M表示碱金属或氢原子。