Patent ID: 7671235

Claim:
A compound of formula I: or a pharmaceutical salt thereof, wherein: m is from 0 to 3; n is from 1 to 3; Ar is optionally substituted aryl or optionally substituted heteroaryl; each R 1 is independently halo, alkyl, haloalkyl, alkoxy, hydroxy, heteroalkyl, cyano, —S(O) t —R a , —C(═O)—NR b R c , —SO 2 —NR b R c , —N(R d )—C(═O)—R e , or —C(═O)—R e , where t is from 0 to 2, R a , R b , R c , R d and R e each independently is hydrogen or alkyl, and R f is hydrogen, alkyl, alkoxy or hydroxy; R 2 is hydrogen or alkyl; and R 3 is alky, haloalkyl or —NR 4 R 5 wherein R 4 and R 5 each independently is hydrogen, alkyl or hydroxyalkyl; provided that when m is 0, n is 1, R 2 is hydrogen and R 3 is methyl or —NH 2 , then Ar is not 3-fluorophenyl.