Patent ID: 7662825

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof: in which: R 1 , R 2 and R 3 are independently hydrogen, chlorine, fluorine, or cyano; R 4 is halogen, CO 2 R 12 or C 1-6 alkoxy where the alkyl group may be substituted with 1-3 fluorine atoms or a cyano group; R 5 and R 6 are independently hydrogen, cyano, halogen, CO 2 R 12 , CONR 14 R 15 ; C 1-6 alkyl optionally substituted by hydroxy, NR 14 R 15 , or 1-3 fluorines; C 3-6 alkynyl or C 3-6 alkenyl optionally branched and optionally substituted with 1-3 groups selected from hydroxy, cyano, halogen and ═O; X—R 12 ; X—(CH 2 )nCO 2 R 12 ; X—(CH 2 )nCONR 14 R 15 ; X—(CH 2 )nCN; X—(CH 2 )qOR 12 ; (CH 2 )nOR 12 ; X—(CH 2 )qNHC(O)NHR 12 ; X—(CH 2 )qNHC(O)R 12 ; X—(CH 2 )qNHS(O) 2 R 12 ; X—C 3-6 alkenyl; X—C 3-6 alkynyl; n is 1,2, 3, 4 or 5; q is 2, 3,4, 5 or 6; X is NR 13 , O, S, S(O), S(O) 2 ; R 12 and R 13 are independently hydrogen or C 1-6 alkyl where the alkyl group may be substituted with 1-3 fluorine atoms; and R 14 and R 15 are independently hydrogen, C 1-6 alkyl, or (CH 2 )qOH.