Abstract:
The present invention is directed toward pyridyl derivatives of formula (I) as antagonists of the mGlu5 receptor. As such the compounds may be useful for treatment or prevention of disorders remedied by antagonism of the mGlu5 receptor, wherein Ar is phenyl or napthyl each of which may be substituted by one or more C-Calkyl, C-Calkoxy, C-Cacyl, halo, amino, nitro, cyano, hydroxy, C-Cacylamino, C-Calkylsulfonylamino, mono-, di- or trifluorinated C-Calkyl, substituents which may be the same or different and may bear a CONH, CONHCH, CON(CH), COH, COCH, OCF, CHNHCOCH, CHNH, CHN(CH), CHCN, CHOH, CHNHSOCH, CHN(CH)(CH)CN, CHN(CH)CH(CH), CHNHCH(CH), CHNH(CH)CH, CHNHCOR, CHNHCHCH, CHNHCHNHCOC(CH), or N(S(O)CH)substituent; Ris hydrogen, halo, R, CN, C(NOH)R, C(NO—R)R, (CH)COR, (CH)OR, COR, CF, SR, S(O)R, S(O)R, COCHCOR, NHSOR, NHCOR, C(NOR)NH, CHOCOR, (CH)NH, CON(CH)(CH)NHCOR, COR, CONH, CSNH, C(NH)NHOR, (CH)N(CH), or CONHNHCOR; Ris 1,2-ethenediyl or 1,2-ethynediyl; Ris hydrogen or C-Calkyl; Ris C-Calkyl; and n is 0, 1, 2, 3 or 4; or a pharmaceutically acceptable salt thereof, or an N-oxide thereof.