The present invention relates to compounds of formula (I): wherein R6 is -CONH2 or a -C(Rα)(Rβ)(OH) group; R is a substituted phenyl or heteroaryl group; R7 is an optionally substituted aryl or heteroaryl group.Process for the preparation thereof and therapeutic use thereof.本發明係關於式(I)化合物:其中R6為-CONH2或-C(Rα)(Rβ)(OH)基團;R為經取代之苯基或雜芳基;R7為視情況經取代之芳基或雜芳基。本發明亦關於其製備方法及其治療用途。