Patent ID: 8088930

Claim:
A compound of formula (I): or a pharmaceutically acceptable salt or ester thereof, wherein: A is oxygen, sulfur, SO 2 , CH 2 or NR 8 ; R 1 is hydrogen or halogen; R 2 is hydrogen or halogen; R 3 is phenyl or pyridinyl, wherein said phenyl or pyridinyl is optionally substituted with one to three substituents independently selected from the group consisting of alkyl, haloalkyl, alkoxy and halogen; R 4 is cycloalkyl or halocycloalkyl; R 5 and R 6 are independently hydrogen or alkyl; or alternatively R 5 and R 6 together with the carbon atom to which they are attached form cycloalkyl; R 7 is cycloalkyl, phenyl, pyridinyl, pyrimidinyl, or thieno[2,3-c]pyridinyl; which is optionally substituted with one to three substituents independently selected from the group consisting of: (1) alkyl, (2) haloalkyl, (3) alkoxy, (4) carboxy, (5) carboxyalkoxy, (6) carboxycycloalkoxy, (7) halogen, (8) isoxazol-3-one-5-yl, (9) 1H-tetrazol-5-yl, (10) [1,2,4]oxadiazolidin-3,5-dione-2-yl, (11) thiazolidin-2,4-dione-5-yl, and (12) imidazolidin-2,4-dione-5-yl; R 8 is hydrogen, alkyl or haloalkyl; and n is 0 or 1.