PROBLEM TO BE SOLVED: To provide novel quercetin derivatives having anticancer activity higher than that of quercetin or sinapic acid a method to efficiently and safely produce the novel quercetin derivatives and anticancer drugs, food, medicines, and quasi-drugs including the novel quercetin derivatives.SOLUTION: Novel quercetin derivatives represented by formula (1) or pharmaceutically acceptable salts thereof are provided. Anticancer drugs, food, medicines and quasi-drugs containing the novel quercetin derivatives are also provided.COPYRIGHT: (C)2014,JPO&INPIT【課題】ケルセチン、シナピン酸より強力な抗癌活性を有する新規ケルセチン誘導体、該新規ケルセチン誘導体を、効率よく、安全に生成する方法、前記新規ケルセチン誘導体を含有することを特徴とする抗癌剤、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):【化1】で示される新規ケルセチン誘導体又はその薬学的に許容可能な塩、前記新規ケルセチン誘導体等を含有する抗癌剤、さらには食品、医薬品または医薬部外品。【選択図】なし
