The invention relates to novel arylamide derivatives having formula (I)and stereoisomers and pharmaceutically acceptable salts thereof, where RA, RB, RC, R’, R”, z and X are as defined in the claims. The arylamide derivatives of formula (I) have antiandrogenic properties. The invention also relates to compounds of formula (I) for use as a medicament and to pharmaceutical compositions comprising them and to their preparation.本發明係相關於具有分子式(I)之新芳醯胺衍生物以及其立體異構物與藥學上可接受之鹽類,其中RA、RB、RC、R’、R’’、z與X係如同申請專利範圍中所定義的。分子式(I)之芳醯胺衍生物具有抗雄激素性質。本發明亦相關於作為藥物使用的分子式(I)之化合物與相關於包含它們的藥學組成物以及相關於其製備。