| abstract |
compound of Formula I: ** Formula ** or a pharmaceutically acceptable salt thereof, wherein: one of A, B, C and D is N and each of the others is independently selected from CH and C (R1); m is 1; n is 2; R1 is halogen; R2 and R3 are hydrogen; R4 is selected from H, C1-6 alkyl or C1-6 halogenated alkyl; Ar is phenyl substituted with 1 or 2 groups independently selected from halogen and C1-6 alkoxy; X is CH2; and Y is -S (O) 2- or -C (O) -. |