PROBLEM TO BE SOLVED: To provide a pharmaceutical agent comprising a compound expressing affinity to serotonin 4 receptors and useful as an enterokinesis-promoting agent or a digestive tract function-improving agent.SOLUTION: The pharmaceutical agent comprises a compound expressed by formula (1) or a pharmaceutically acceptable salt thereof. In the formula, Ar means (Ar-1) or the like R1 means a halogen atom or the like and X means CH or the like.COPYRIGHT: (C)2011,JPO&INPIT【課題】セロトニン4受容体に対して親和性を示し、消化管運動促進薬又は消化管機能改善薬として有用な化合物からなる医薬の提供。【解決手段】下記一般式(1)で表される化合物又はその薬学上許容される塩からなる医薬。[式中、Arは式(Ar-1)等を、R1はハロゲン原子等を、XはCH等を意味する]【選択図】なし
