Thiazole and thiophene compounds

A compound of formula (I):

• wherein:
• X is N or CH;
• R1 is indole, oxoindole, indazole or substituted phenyl, said substituted phenyl being mono- or bi-substituted independently with hydroxy, halogen, alkoxy or lower alkyl;
• R2 is —(CH2)nC(O)NH—, —(CH2)nNHC(O)—, —(CH2)nNH—, —(CH2)nO— or —CH(CH3)NHC(O)—;
• R3 is hydrogen, methyl, trifluoromethyl, halogen or cyano;
• R4 is indazole, benzimidazole, unsubstituted heteroaryl, heteroaryl mono- or bi-substituted independently with (═O), alkoxy or hydroxy, unsubstituted phenyl or phenyl mono- or bi-substituted independently with hydroxy, methyl, halogen or —COOH;
• R5 is hydrogen, lower alkyl, alkoxy, cycloalkyl, heterocycloalkyl, lower alkyl-cycloalkyl, lower alkyl-heterocycloalkyl, —(CH2)nOR6, —CH(CH3)O(O)R6 or —(CH2)—NR7R8;
• R6, R7 and R8, independently of each other, are hydrogen, lower alkyl or alkoxy;
• and
• n is 1, 2 or 3,
• or a pharmaceutically acceptable salt thereof.