Patent ID: 7947709

Claim:
A compound according to formula I wherein: X is O or NR 2 ; R 1 is halogen, C 1-6 alkyl, C 3-7 cycloalkyl, C 1-6 haloalkyl, or C 1-6 alkoxy; R 2 and R 3 independently are (i) hydrogen or C 1-6 alkyl; (ii) R 2 and R 3 together are (CH 2 ) n , ortho-phenylene, pyridinylene, 3,4-pyridazylene or CH═N wherein n is an integer from 2 to 4 and a nitrogen atom in said pyridinylene or 3,4-pyridazylene ring can be optionally be substituted with an oxygen; or, (iii) R 2 is hydrogen and R 3 is phenyl optionally substituted with one to 3 substituents optionally selected from the group consisting of C 1-6 alkyl, C 1-6 haloalkyl, C 1-6 alkoxy, C 1-6 haloalkoxy, halogen, cyano and nitro; Ar is phenyl optionally substituted with one to three groups independently selected from the group consisting of selected from halogen, cyano, C 1-6 haloalkyl and C 1-6 alkyl; or, a pharmaceutically acceptable salt thereof.