The purpose of the present invention is to provide a drug that contains a compound having an excellent therapeutic effect on inflammatory bowel disease. The therapeutic agent for inflammatory bowel disease contains as an active ingredient a compound represented by formula (I) [in general formula (I), R1 represents a hydroxy C1-C6 alkyl group, C2-C7 alkanoyl group, C2-C7 alkanoyl C1-C6 alkyl group, (C1-C6 alkoxy)carbonyl group, (C1-C6 alkoxy)carbonyl C1-C6 alkyl group, carboxy group, or carboxy C1-C6 alkyl group] or a pharmaceutically acceptable salt thereof.本發明係以提供一種含有具有優異的炎症性腸病治療效果的化合物的醫藥為目的。一種炎症性腸病治療劑，其含有式(I)所表示的化合物或其藥理上可容許的鹽作為有效成分，[通式(I)中，R1表示羥基C1~C6烷基、C2~C7烷醯基、C2~C7烷醯基C1~C6烷基、(C1~C6烷氧基)羰基、(C1~C6烷氧基)羰基C1~C6烷基、羧基、或羧基C1~C6烷基]。
