PROBLEM TO BE SOLVED: To provide an anticancer agent having excellent anticancer activity.SOLUTION: The present invention provides: a compound represented by the formula (I), where Ar1 is phenyl or 4-hydroxy-3-methoxyphenyl and Ar2 is substituted or unsubstituted phenyl, or a salt thereof and an anticancer agent containing the compound or salt thereof.COPYRIGHT: (C)2015,JPO&INPIT【課題】優れた抗癌作用を有する抗癌剤を提供する。【解決手段】式(I)【化1】(式中、Ar1はフェニル又は4-ヒドロキシ-3-メトキシフェニル、Ar2は置換又は非置換のフェニル)で示される化合物又はその塩;及び前記化合物又はその塩を含有する抗癌剤。【選択図】なし