The present invention provides compounds which antagonize hedgehog signal ing and inhibit HDAC activity. The compounds can be used in methods of treating proliferative diseases and disorders such as cancer.本發明提供與刺蝟蛋白訊息傳遞拮抗以及抑制組蛋白去乙醯基酶(HDAC)活性之化合物。上述化合物可用於治療細胞增生性疾病及病症,例如癌症。