Patent ID: 7531577

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof, wherein: m is 0 to 1; Ar is phenyl 2-halophenyl or 3-halophenyl; X is —SO 2 —NH— or —NH—SO 2 —; 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 , 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; R 2 is n is 1; R 3 and R 4 are hydrogen; one of R 5 and R 6 is hydrogen and the other is aminocarbonyl.