The invention relates to compounds of formula (I) wherein R, R
0
, R
1
, m, n and X
1
to X
4
have the meaning as cited in the description and the claims. Said compounds are useful as Histamine H3 receptor antagonists. The invention also relates to pharmaceutical compositions, the preparation of such compounds as well as the production and use as medicament.
本发明涉及式(I)的化合物,其中R,R0,R1,m,n和X1至X4具有描述和权利要求中所述的含义。所述化合物可用作
组胺H3受体拮抗剂。本发明还涉及制备这种化合物的药物组合物,以及作为药物的生产和使用。