Patent ID: 8558002

Claim:
A compound represented by the general formula I wherein: R 1 is hydrogen or NH 2 ; R 2 is hydrogen or NH 2 ; X is selected from the group consisting of Y is CH or N; Ar is an aryl group, wherein said aryl group may be optionally substituted with halogen, alkyl, alkoxy, or alkoxycarbonyl; Ar 1 is an aryl group, wherein said aryl group may be optionally substituted with halogen, alkyl, alkoxy, alkoxycarbonyl, sulfinyl, thioether, fluoro or chloro-substituted lower alkyl; R 3 is hydrogen or lower alkyl; R 4 is hydrogen or lower alkyl; n is an integer of from 1 to 6; and m is an integer of from 1 to 6; or a pharmaceutically acceptable salt of said compound.