PROBLEM TO BE SOLVED: To provide an anti-cancer agent that contains a novel resveratrol derivative, an anti-cancer agent for oral cancer, and foods, medicines, and quasi drugs therefor.SOLUTION: This invention provides a novel resveratrol derivative represented by formula (1) or its pharmacologically acceptable salt, and an anti-cancer agent containing the novel resveratrol derivative and the like, and foods, medicines, and quasi drugs therefor.COPYRIGHT: (C)2014,JPO&INPIT【課題】新規レスベラトロール誘導体を含有することを特徴とする抗癌剤、口腔癌に対する抗癌剤、さらには、食品、医薬品、医薬部外品を提供すること。【解決手段】式(1):で示される新規レスベラトロール誘導体又はその薬学的に許容可能な塩、前記新規レスベラトロール誘導体等を含有する抗癌剤、さらには食品、医薬品又は医薬部外品。【選択図】なし