Patent ID: 7696240

Claim:
A compound of formula (I): or a pharmaceutically acceptable salt thereof, wherein: A is a monocyclic aromatic ring of six carbon atoms; Ar is naphthalenyl optionally substituted by one to three substituents independently selected from the group consisting of: (1) C 1-6 alkyl, (2) C 3-7 cycloalkyl, (3) C 3-7 cycloalkyl C 1-6 alkyl, (4) C 2-6 alkenyl, (5) C 2-6 alkynyl, (6) hydroxy, (7) C 1-6 alkoxy, (8) halogen, (9) heteroalkyl, (10) heteroalkoxy, (11) nitro, (12) cyano, (13) amino and (14) mono-or di-C 1-6 alkyl substituted amino; R 1 is hydrogen, C 1-6 alkyl, or N(R′)(R″)-carbonyl-C 1-6 alkyl-, wherein R′ and R″ are independently selected from the group consisting of: (1) hydrogen, (2) C 1-6 alkyl, (3) C 3-7 cycloalkyl, (4) C 3-7 cycloalkyl C 1-6 alkyl, (5) C 2-6 alkenyl, (6) C 2-6 alkynyl, (7) heteroalkyl, (8) optionally substituted phenyl C 1-6 alkyl, (9) optionally substituted heteroaryl C 1-6 alkyl, (10) optionally substituted heterocyclyl C 1-6 alkyl, (11) optionally substituted phenylcarbonyl, (12) optionally substituted heteroarylcarbonyl and (13) optionally substituted heterocyclylcarbonyl; R 2 , R 2′ and R 2″ are independently selected from the group consisting of: (1) hydrogen, (2) halogen, (3) C 1-6 alkyl optionally substituted by halogen, and (4) non-substituted C 1-6 alkoxy; and n is an integer of 0 to 4.