申请人:Astellas Pharma Inc.
公开号:US08822688B2
公开(公告)日:2014-09-02
[Problem]
To provide a compound useful as medicine having PDE4B inhibitory activity, in particular, as an active ingredient of a composition for treating or preventing schizophrenia, Alzheimer's disease, dementia, depression and the like.
[Measures for Solution]
The present inventors examined compounds having PDE4B inhibitory activity and found that a tricyclic or tetracyclic imidazo[1,2-a]pyridine derivative or salts thereof had a superior PDE4B inhibitory activity, thereby completing the present invention. The imidazo[1,2-a]pyridine derivative can be used as an agent for treating or preventing schizophrenia, Alzheimer's disease, dementia, depression and the like.
[问题] 提供一种具有PDE4B抑制活性的化合物作为药物,特别是作为治疗或预防精神分裂症、阿尔茨海默病、痴呆、抑郁症等疾病的组合物的活性成分。
[解决措施] 现发明人研究了具有PDE4B抑制活性的化合物,并发现三环或四环咪唑[1,2-a]吡啶衍生物或其盐具有卓越的PDE4B抑制活性,从而完成了本发明。咪唑[1,2-a]吡啶衍生物可用作治疗或预防精神分裂症、阿尔茨海默病、痴呆、抑郁症等疾病的药物。