(Generalized anxiety disorder, panic disorder, obsessive-compulsive disorder, social anxiety disorder, post-traumatic stress disorder, the present invention, specific schizophrenia was based on the glycine uptake inhibitory effect, Alzheimers disease, cognitive impairment, dementia, anxiety disorders phobias, acute stress disorder, etc.), depression, drug dependence, convulsions, tremor, pain, or its pharmaceutically or novel compounds represented useful in the treatment equation [I] or prevention of diseases of the sleep disorders, etc. and an object thereof is to provide a salt which is acceptable above. [Formula 1] None [Selection Figure]本発明は、グリシン取り込み阻害作用に基づいた統合失調症、アルツハイマー病、認知機能障害、認知症、不安障害(全般性不安障害、パニック障害、強迫性障害、社会不安障害、外傷後ストレス障害、特定の恐怖症、急性ストレス障害等)、うつ病、薬物依存、痙攣、振戦、疼痛、又は睡眠障害等の疾患の予防又は治療に有用な式[I]で表される新規な化合物又はその医薬上許容される塩を提供することを目的とする。【化1】【選択図】 なし
