PROBLEM TO BE SOLVED: To provide an agent for preventing and/or treating a bowel disease.SOLUTION: The present invention provides an agent for preventing and/or treating a bowel disease comprising a compound represented by a formula (I) [R1, R2, R3, R4 and n are as defined in the specification] or pharmaceutically acceptable salt thereof as an active ingredient.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】腸疾患の予防剤および/または治療剤の提供。【解決手段】式(I):[式中:R1、R2、R3、R4およびnは、本明細書に定義される通りである。]で表される化合物またはその医薬的に許容される塩を有効成分として含む、腸疾患の予防剤および/または治療剤。【選択図】図1