Patent ID: 7572785

Claim:
A compound of structural formula (I): or a pharmaceutically acceptable salt thereof, wherein: R 1 is selected from: (1) hydrogen (2) C 1-10 alkyl, (3) C 2-10 alkenyl, (4) C 2-10 alkynyl, (5) cycloalkyl, (6) cycloalkyl-C 1-10 alkyl, wherein alkyl, alkenyl, alkynyl, and cycloalkyl, are optionally substituted with one to four substituents independently selected from C 1-4 alkoxy, amino, and R a ; R 2 is selected from: (1) —OR d , and (2) —NR d R e ; Ar 1 and Ar 2 are each independently selected from: (1) phenyl, (2) 4-chlorophenyl, (3) 4-methylphenyl, and (4) 2,4-dichlorophenyl; each R a is independently selected from: (1) —OR d , (2) —NR d S(O) m R e , (3) —S(O) m R d , (4) —SR d , (5) —S(O) m NR d R e , (6) —NR d R e , (7) —O(CR f R g ) n NR d R c , (8) —CO 2 R d , (9) —CO 2 (CR f R g ) n CONR d R e , (10) —OC(O)R d , (11) —C(O)NR d R e , (12) —NR d C(O)R e , (13) —OC(O)NR d R e , (14) —NR d C(O)OR e , (15) —NR d C(O)NR d R e , and (16) —CR d (N—OR e ); wherein R d is selected from piperidinyl, morpholinyl, pyrrolidinyl, azepinyl, tetrahydropyranyl and 2,2-dimethyl tetrahydropyranyl; R e is selected from hydrogen and methyl; or R d and R e together with the nitrogen to which they are attached form a piperidinyl, pyrrolidinyl, or morpholinyl ring; R f and R g are independently selected from hydrogen, C 1-10 alkyl, cycloalkyl; and cycloalkyl-C 1-10 alkyl; wherein cycloalkyl is selected from: cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and cycloheptyl; m is selected from 1 and 2; and n is selected from 1, 2, and 3.