PROBLEM TO BE SOLVED: To prevent or treat a lactam compound derivative, a medical composition containing a lactam compound derivative, and schizophrenia which binds to a plurality of receptors, has a wide range of activities, and has few side effects such as EPS and weight gain. Use of compositions and lactam compound derivatives in the preparation of agents for. 7- (4- (4- (6-fluorobenzo [d] isoxazole-3-yl) piperidine-1-yl) butoxy) -2-methyl having a structure represented by the following general formula I. A compound typified by -3,4-dihydroisoquinoline-1 (2H) -one. [Selection diagram] None【課題】ラクタム化合物誘導体、ラクタム化合物誘導体を含んでなる医学組成物、ならびに複数の受容体と結合し、広範な活性を有し、ＥＰＳおよび体重増加などの副作用が少ない統合失調症の予防または治療のための薬剤の調製における組成物およびラクタム化合物誘導体の使用。【解決手段】下記の一般式Ｉで示される構造を有する、７－（４－（４－（６－フルオロベンゾ［ｄ］イソキサゾール－３－イル）ピペリジン－１－イル）ブトキシ）－２－メチル－３，４－ジヒドロイソキノリン－１（２Ｈ）－オンに代表される化合物。【選択図】なし
