PROBLEM TO BE SOLVED: To provide a new compound exhibiting a high antioxidation activity, an estrogen activity and an estrogen-antagonizing activity.SOLUTION: This new compound is expressed by formula (1) or its pharmaceutically acceptable salt.COPYRIGHT: (C)2008,JPO&INPIT【課題】高い抗酸化作用、エストロゲン作用、拮抗作用を示す新規化合物の提供【解決手段】次式で表される新規化合物又はその薬学的に許容されうる塩。【化1】【選択図】図4