PROBLEM TO BE SOLVED: To provide an antidepressant, a brain protective agent, an amyloid &beta-deposition inhibitor or a senescence retardant having an excellent therapeutic effect.SOLUTION: The antidepressant, the brain-protecting agent, the amyloid &beta-deposition inhibitor or the senescence retardant each contains a heterocyclic compound represented by general formula (I).COPYRIGHT: (C)2008,JPO&INPIT【課題】優れた治療効果を有する抗鬱剤、脳保護剤、アミロイドβ沈着抑制剤または老化抑制剤を提供する。【解決手段】下記一般式(I)で示す複素環化合物を含む抗鬱剤、脳保護剤、アミロイドβ沈着抑制剤または老化抑制剤。【選択図】図1
