Patent ID: 7087609

Claim:
A compound of Formula I or a pharmaceutically acceptable salt thereof wherein R 1 is selected from the group consisting of pyridinyl, 3-quinolinyl, 2-thienyl, C 3-6 cycloalkyl and phenyl optionally substituted with a substituent independently selected from the group consisting of halogen, C 1-4 alkyl, C 1-4 alkoxy, trifluoromethyl and trifluoromethoxy; A is —CH═CH— or —(CH 2 ) n —; R 2 is C 1-4 alkyl, CF 3 or hydroxymethyl; R 3 , R 4 , R 5 and R 6 each are independently hydrogen or fluoro; n is an integer of 1 or 2; and B is 2-pyridinyl, 3-pyridinyl or 4-pyridinyl.