New benzimidazole derivatives

A compound of formula (I):

• or a pharmaceutically acceptable salt or ester thereof, wherein:
• A is oxygen, sulfur, SO2, CH2 or NR8;
• R1 is hydrogen or halogen;
• R2 is hydrogen or halogen;
• R3 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;
• R4 is alkyl, cycloalkyl, halocycloalkyl or phenyl;
• R5 and R6 are independently hydrogen or alkyl;
• or alternatively R5 and R6 together with the carbon atom to which they are attached form cycloalkyl;
• R7 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;
• R8 is hydrogen, alkyl or haloalkyl;
• and
• n is 0 or 1.