Patent ID: 7700778

Claim:
A compound of structural formula I: or a pharmaceutically acceptable salt thereof; wherein r is 1 or 2; s is 1; n is 0, 1 or 2; R 1 is NR 6 R 7 wherein R 6 and R 7 are each independently selected from the group consisting of hydrogen, C 1-6 alkyl, and C 3-6 cycloalkyl; or R 6 and R 7 together with the nitrogen atom to which they are attached form a 4 membered ring; R 2 is phenyl optionally substituted with one to three groups independently selected from R 3 ; each R 3 is independently selected from the group consisting of hydrogen, halogen, C 1-4 alkyl, trifluoromethyl, and C 1-4 alkoxy; each R 5 is independently selected from the group consisting of hydrogen, C 1-8 alkyl; Y is cyclohexyl, unsubstituted or substituted with one to three groups independently selected from alkyl; and X is selected from the group consisting of: (CH 2 ) n -heterocyclyl, (CH 2 ) n C(O)N(R 5 )(R 5 ), and (CH 2 ) n NR 5 SO 2 R 5 , wherein heterocyclyl is oxazolidinone, optionally substituted with one to three groups independently selected from alkyl.