PROBLEM TO BE SOLVED: To provide a compound having glycogen synthase activation potency, high muscular transition, minimal activation of receptor PPAR, and a high degree of safety.SOLUTION: Provided is a compound represented by the general formula in the figure or a pharmaceutically acceptable salt thereof, where R is represented by the formula in the figure and Ar represents an aromatic group that may have a substituent.SELECTED DRAWING: None【課題】グリコーゲンシンターゼ活性化能を有し、筋肉移行性が高く、受容体PPARが活性化されることも少なくて安全性の高い化合物を提供する。【解決手段】下記一般式で表される化合物又はその医薬上許容される塩。（式中、Ｒは以下の式で表され、Ａｒは置換基を有していてもよい芳香族基を表す。【選択図】なし
