[Formula 1] With histone deacetylase inhibitory activity, the formula (I) [wherein, the invention, X and 8, R 9 R 1, R 2 R 3, R 4, R 5, R 6, R 7, R is New compound of has the meaning as defined, their preparation, and I comprises the use thereof as pharmaceutical compositions and containing them.【化1】本発明は、ヒストンデアセチラーゼ阻害酵素活性をもつ、式(I)[式中、R1、R2R3、R4、R5、R6、R7、R8、R9及びXは定義された意味をもつ]の新化合物、それらの製造、それらを含有する組成物並びに医薬としてのそれらの使用を含んでなる。