The purpose of the present invention is to provide a novel compound which has retinoid-related orphan receptor [gamma] antagonistic activity and exhibits a remedial effect or prophylactic effect on autoimmune diseases including psoriasis. The present invention provides the anilide derivative (I) shown below or a hydrate thereof or a pharmacologically acceptable salt of either.本發明係以提供一種新穎化合物作為目的，該新穎化合物具有類視色素相關孤兒受體γ拮抗劑活性，而對乾癬等之自體免疫疾病發揮治療效果或預防效果。本發明提供下述所代表之醯胺苯衍生物(I)或其水合物、或者此等之藥理學容許鹽。
