Patent ID: 8575359

Claim:
A compound having the formula wherein R 1 is selected from the group consisting of H, Br, NO 2 , butyl, OMe, CN, methyl, carboxy, and methyl carboxylate; R 2 is selected from the group consisting of H, NO 2 , butyl, OMe, CN, histidine, and histamine; R 3 is selected from the group consisting of H, NO 2 , butyl, OMe, and CN, or one of R 2 and R 3 is selected from the group consisting of Br, 2-aminoethyl, acetate, and N-(prop-2-ynyl)acetamide and one of R 2 and R 3 is H; XR 4 is selected from the group consisting of OCH 2 CH 3 and OCH 3 ; R 5 is R 6 is selected from the group consisting of H, Br, NO 2 , butyl, COR 8 and COR 9 ; R 7 is selected from the group consisting of H, Br, OMe, CN, NO 2 , COR 8 , and COR 9 ; R 8 is a hydroxyl-containing cancer therapeutic agent; and R 9 is an amine-containing cancer therapeutic agent, wherein one of R 6 and R 7 is COR 8 or COR 9 .