The present invention provides a compound having a cholinergic muscarinic M1 receptor positive allosteric modulator activity, which may be useful as a prophylactic or therapeutic drug for Alzheimer's disease, schizophrenia, pain, sleep disorder, Parkinson's disease dementia, dementia with Lewy bodies and the like. The present invention relates to a compound represented by the formula (I) or a salt thereof:
wherein each symbol is as defined in the attached DESCRIPTION.
                            本发明提供了一种具有
胆碱能毒蕈碱 M1 受体正异位调节剂活性的化合物,该化合物可用作阿尔茨海默病、精神分裂症、疼痛、睡眠障碍、帕
金森病痴呆、路易体痴呆等的预防或治疗药物。本发明涉及一种由式(I)代表的化合物或其盐:
其中各符号如所附说明书中定义。