Patent ID: 8466197

Claim:
A compound of Formula (I) or a pharmaceutically acceptable salt thereof, wherein n is 1 or 2; R 1 is OR 6 or NR 6 R 7 ; R 2 is H or 2,4-difluorophenyl; R 3 is H or (C 1 -C 6 )alkyl; R 4 is H or acetyl; R 5 is H or trifluoromethyl; R 6 and R 7 are independently H, (C 1 -C 6 )alkyl, (C 3 -C 8 )cycloalkyl, or (C 3 -C 8 )cycloalkyl(C 1 -C 6 )alkyl, wherein the (C 1 -C 6 )alkyl, (C 3 -C 8 )cycloalkyl, and (C 3 -C 8 )cycloalkyl(C 1 -C 6 )alkyl are independently optionally substituted with 1, 2, 3, or 4 substituents that are independently (C 1 -C 6 )alkoxy, (C 1 -C 6 )alkoxy(C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxycarbonyl, (C 1 -C 6 )alkylthio, halogen, hydroxy, hydroxycarbonyl, NZ 1 Z 2 , or phenyl, wherein the phenyl is optionally substituted with 1, 2, 3, 4, or 5 halogens and each Z 1 and Z 2 is independently H or (C 1 -C 6 )alkyl; or R 6 and R 7 together with the nitrogen atom to which they are attached form azetidine, pyrrolidine, piperidine, piperazine, N-methylpiperazine, morpholine, or azepane.