Patent ID: 8053430

Claim:
A method for treating a patient suffering from renal cell carcinoma, comprising administering to the patient a compound according to the Formula I: wherein R1, R2, R3 and/or R4 are selected from the group consisting of hydrogen, amino, mercapto, carboxy, phosphate and halo, C 1 -C 6 alkyl, C 1 -C 6 alkenyl, C 1 -C 6 alkynyl, C 1 -C 6 alkanol, C 1 -C 6 alkenol, C 1 -C 6 alkoxy, and C 1 -C 6 alkenoxy, and wherein C 1 -C 6 alkyl, C 1 -C 6 alkenyl, C 1 -C 6 alkynyl, C 1 -C 6 alkanol, C 1 -C 6 alkenol, C 1 -C 6 alkoxy, and C 1 -C 6 alkenoxy may be further substituted with groups selected from the group consisting of amino, mercapto, carboxy, phosphate and halo, and a pharmaceutically acceptable salt thereof, wherein the treatment results in a reduction in tumor size.