The present invention relates to heterocyclyl compounds of formula (I), and their pharmaceutically acceptable salts and compositions containing them. The present invention also relates to a process for the preparation of above said novel compounds, and their pharmaceutically acceptable salts. The compounds of formula (I) are useful in the treatment of various disorders that are related to Histamine H
3
receptors, for example cognitive disorders, sleep disorders, obesity and pain.
本发明涉及式(I)的
杂环化合物及其药学上可接受的盐和含有它们的组合物。本发明还涉及上述新型化合物及其药学上可接受的盐的制备方法。式(I)的化合物在治疗与
组胺H3受体相关的各种疾病方面具有用途,例如认知障碍、睡眠障碍、肥胖症和疼痛。