Patent ID: 7622501

Claim:
A compound of Formula I or a pharmaceutically acceptable salt thereof, wherein: n is an integer from 1 to 6; X is —O— or —CH 2 —; R 1 is selected from the group consisting of: (a) S(O) 2 CH 3 and (b) S(O) 2 NH 2 ; R 2 and R 3 each are independently selected from the group consisting of: (a) hydrogen, (b) halo, (c) C 1-6 alkoxy, (d) C 1-6 alkylthio, (e) CN, (f) CF 3 , (g) C 1-6 alkyl, and (h) N 3 ; R 4 is selected from the group consisting of (a) hydrogen, (b) —C 1-4 alkyl, optionally substituted with with 1 to 3 substituents independently selected from halo and R 5 , and (c) R 5 ; each R 5 is independently selected from the group consisting of: phenyl, naphthyl or a 5- or 6-membered aromatic heterocycle, each optionally substituted with 1 to 3 halo groups.