Patent ID: 8703829

Claim:
A method for treating cancer in an animal comprising administering to the animal a compound of Formula (II): wherein: R 3 is hydroxy, mercapto, chloro, bromo, methylthio, ethylthio, methoxy, ethoxy, acetylamino, (C 1 -C 20 )alkanoyloxy, arylcarbonyloxy, or aryloxy; and R 4 is (C 4 -C 10 )alkyl, (C 2 -C 10 )alkenyl, or (C 2 -C 10 )alkynyl, which (C 4 -C 10 )alkyl, (C 2 -C 10 )alkenyl, or (C 2 -C 10 )alkynyl is optionally substituted with one or more groups independently selected from halo, hydroxy, mercapto, (C 1 -C 10 )alkoxy, (C 1 -C 10 )alkylthio, carboxy, (C 1 -C 10 )alkoxycarbonyl, aryl, heteroaryl, and NR a R b ; each R a and R b is independently H, (C 1 -C 20 )alkyl, (C 1 -C 20 )alkanoyl, (C 2 -C 20 )alkenylcarbonyl, (C 2 -C 20 )alkynylcarbonyl, (C 1 -C 20 )alkoxy, (C 2 -C 20 )alkenyloxy, (C 2 -C 20 )alkynyloxy, or aryl-(C 1 -C 20 )alkoxycarbonyl; or a pharmaceutically acceptable salt thereof, wherein the cancer is breast cancer, prostate cancer, colon cancer, brain cancer, or non-small cell lung cancer.