IMIDAZO[1,2-A]PYRIDINE DERIVATIVE

摘要

Disclosed is a compound useful as an active ingredient for medicines having PDE4B inhibiting activity, in particular, therapeutic or preventive medicinal compositions for schizophrenia, Alzheimer's disease, dementia, depression and the like. Specifically, the present inventors examined compounds having PDE4B inhibiting activity and found that a tricyclic or tetracyclic imidazo[1,2-a]pyridine derivative or salts thereof had superior PDE4B inhibiting activity. This imidazo[1,2-a]pyridine derivative can be used in therapeutic and preventative agents for schizophrenia, Alzheimer's disease, dementia, depression, and the like.