Patent ID: 8710064

Claim:
A method for treating cancer: administering a compound of formula I or a pharmaceutically acceptable salt, solvate or stereoisomer thereof to a subject in need thereof: wherein R 5 , R 7 and R 8 are H, R 6 is pyrrolidinyl group, and Ar represents wherein R 2 ′, R 3 ′, R 4 ′, R 5 ′, R 6 ′, R 7 ′, R 8 ′ are H, and said cancer is selected from the group consisting of: skin, small-lung cancer, lymph node, breast, cervix, uterus, gastrointestinal tract, ovary, prostate, colorectal, mouth, brain, head and neck, testes, kidney, pancreas, bone, spleen, bladder, larynx and nasal passage cancers or tumors.