Compounds of formula (IA) and (IB) are inhibitors of histone deacetylase activity and useful for the treatment of, inter alia, cancers: wherein fused rings A1 and A2 are optionally substituted; linker radical R1 represents a radical of formula
式(IA)和(IB)的化合物是组蛋白
去乙酰化酶活性的
抑制剂,用于治疗癌症等疾病:其中融合的环A1和A2可以选择性地被取代;连接基团R1代表一个公式的基团。