Patent ID: 7776910

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof, wherein: m is from 0 to 4; n is from 0 to 2; Ar is optionally substituted aryl or optionally substituted heteroaryl; R 1 is: hydrogen; C 1-6 alkyl; hetero-C 1-6 alkyl; or —(CH 2 ) p —X—(CH 2 ) q —R a ; wherein: X is —C(O)— or —SO 2 —; p and q each independently is 0 or 1; and R a is: C 1-6 alkyl; C 1-6 alkoxy; halo-C 1-6 alkyl; halo-C 1-6 alkoxy; hydroxy; amino; N—C 1-6 alkyl-amino; or N,N-di-C 1-6 alkylamino; and each R 2 is independently: halo; C 1-6 alkyl; halo-C 1-6 alkyl; halo-C 1-6 alkoxy; C 1-6 alkoxy; hydroxy; hetero-C 1-6 alkyl; cyano; nitro; amino; N—C 1-6 alkyl-amino; N,N-di-C 1-6 alkylamino; or —(CH 2 ) r —Y—(CH 2 ) s -Z-(CH 2 ) t -Q-(CH 2 ) u —R b ; wherein r, s, t and u each independently is 0 or 1; Z is —C(O)— or —SO 2 —; X and Y each independently is —O—, —NR c — or a bond; R b is: hydrogen; C 1-6 alkyl; halo-C 1-6 alkyl; halo-C 1-6 alkoxy; C 1-6 alkoxy; hydroxy; hetero-C 1-6 alkyl; cyano; amino; C 1-6 alkyl-amino; or N,N-di-C 1-6 alkylamino; and R c is: hydrogen; or C 1-6 alkyl.