The invention relates to compounds of formula (I), wherein X
1a
, X
1
to X
5
, R
a
, R
b
, n and R 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.
本发明涉及化合物的公式(I),其中X1a、X1至X5、Ra、Rb、n和R的含义如所述及权利要求所述。所述化合物可用作
组胺H3受体
拮抗剂。本发明还涉及制药组合物,制备这种化合物以及作为药物的生产和使用。