Abstract: The invention provides a composition for attenuating neovascularization and treating malignancies, including a pharmaceutically effective amount of a compound having a formula: wherein: R1 is a number of the group consisting of hydrogen, halogen, nitro, benzo, lower alkyl, phenyl and lower alkoxy, R2 is a member of the group consisting of hydroxy, acetoxy, and lower alkoxy, and R3 is a member of the group consisting of hydrogen and lower alkenoxy carbonyl, as active ingredient therein, in combination with a pharmaceutically acceptable carrier.