申请人:Hoffmann-La Roche Inc.
公开号:US07534788B2
公开(公告)日:2009-05-19
The present invention relates to compounds of formula I
wherein X, A and R1 to R4 are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prevention of diseases which are associated with the modulation of H3 receptors.
本发明涉及式I的化合物,其中X,A和R1到R4在说明书和权利要求书中定义,并且其药学上可接受的盐。这些化合物可用于治疗和/或预防与H3受体调节有关的疾病。