PROBLEM TO BE SOLVED: To provide a compound for use as an agent for preventing, inhibiting, or treating pathological or nonpathological conditions associated with premature aging.SOLUTION: The present invention provides a compound illustrated by formula (Ia). [R independently represents H, a halogen atom or a -CN group, a hydroxyl group or the like n is an integer of 1-3 n is 1 or 2 R is H, a halogen atom or the like R is H or a (C1-C4) alkyl group].SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】早期老化に関連付けられる病理学的又は非病理学的状態を予防し、抑制し、又は治療する為の剤としての使用の為の化合物の提供。【解決手段】式(I)aで例示される化合物。[Rは各々独立にH、ハロゲン原子又は-CN基、ヒドロキシル基等;nは1~3の整数;n’は、1又は2;R’はH、ハロゲン原子等;R’’はH又は(C1-C4)アルキル基。]【選択図】なし