Patent ID: 8476313

Claim:
A method for treating breast cancer in a subject, comprising the step of administering to a subject that has been diagnosed with breast cancer a therapeutically effective amount of an isoflavone of formula I wherein X is selected from the group consisting of O, NH, S, SO, SO 2 , and S(CH 2 ) n , wherein n=1-10; R 1 and R 2 can be the same or different and are selected from the group consisting of H, OH, OCH 3 , OCH 2 CH 3 , OCH 2 C 6 H 5 , NH 2 , NHCH 3 , N(CH 3 ) 2 , CH 3 , CH 2 CH 3 , CH 2 CH 2 CH 3 , CH(CH 3 ) 2 , C(CH 3 ) 3 , NO 2 , F, Cl, Br, CF 3 , SH, SCH 3 , SCH 2 CH 3 , OCOCH 3 , OCOC(CH 3 ) 3 , OCOCH 2 COOH, and CN; and R 3 is a 5- or 6-membered ring containing 1-3 nitrogen atoms in the ring, the ring being unsubstituted or substituted with a member selected from the group consisting of H, OH, OCH 3 , OCH 2 CH 3 , NH 2 , NHCH 3 , N(CH 3 ) 2 , NO 2 , CH 3 , CH 2 CH 3 , CH 2 CH 2 CH 3 , CH(CH 3 ) 2 , C(CH 3 ) 3 , F, Cl, Br, CF 3 , SH, SCH 3 , SCH 2 CH 3 , CN and combinations thereof.