PROBLEM TO BE SOLVED: To provide a therapeutic or prophylactic agent for inflammatory diseases, allergic diseases and autoimmune diseases, and to provide an agent for suppressing rejection in organ transplantation.SOLUTION: A pharmaceutical composition contains as an active ingredient a compound represented by formula [I], or a pharmaceutically acceptable salt thereof. A commercial kit comprises a description involving in the pharmaceutical composition for use in the treatment or prevention of inflammatory diseases, allergic diseases, or autoimmune diseases. In the formula [I], Ris H, a hydroxy group, or a Calkoxy group substituted/unsubstituted by Caryl group； and Rand Ris each independently H, or a Calkyl group or the like which is substituted/unsubstituted by 1 to 3 substituents selected from a hydroxy group and a Calkoxy group.SELECTED DRAWING: None【課題】炎症性疾患、アレルギー性疾患、自己免疫疾患の治療または予防剤、および移植における拒絶反応の抑制剤等の提供。【解決手段】式［Ｉ］で表される化合物又はその医薬上許容される塩を有効成分として含有する医薬組成物、及び該医薬組成物を炎症性疾患、アレルギー性疾患又は自己免疫疾患の治療或いは予防に使用する、該医薬組成物に関する記載物を含む商業用キット。［Ｒ１はＨ、ヒドロキシ基又はＣ６－１０アリール基で置換／非置換のＣ１－６アルコキシ基；Ｒ２及びＲ３は、夫々独立にＨ或いはヒドロキシ基、Ｃ１－６アルコキシ基で１～３個の置換基で置換／非置換のＣ１－６アルキル基等］【選択図】なし
