| abstract |
(57) [Problem] To provide an antitumor compound having a novel structure. SOLUTION: A compound having a structure of the formula (I), a salt thereof, and a hydrate thereof. (Wherein, X: oxygen atom, sulfur atom, structure NR 4 ; Y: Keto group, hydroxyl group; R 1 : nitro group, amino group; R 2 , R 3 : independently of each other, a hydrogen atom, a hydroxyl group, a halogen atom, a nitro group, an amino group, an alkoxyl group, an alkylamino group; R 4 : a hydrogen atom, an alkyl group which may have a substituent; R 5 , R 6 : Hydrogen atom, alkyl group. ) |