Patent ID: 8188301

Claim:
A compound of Formula (2): any of its stereoisomers or any mixture of its stereoisomers, or an N-oxide thereof, or a pharmaceutically acceptable salt thereof, wherein; Ar is selected from the group consisting of phenyl, thiophenyl, furanyl, 2-pyrimidinyl, oxazoyl and thiazolyl; R 1 is selected from the group consisting of F and Cl; R 2 is selected from the group consisting of F and Cl; R 3 is selected from the group consisting of H, Me, Et, n-Pr, i-Pr, n-Bu, i-Bu, s-Bu, t-Bu, cyclopropylmethyl, CFH 2 CH 2 CH 2 —, CF 2 HCH 2 CH 2 —, CF 3 CH 2 CH 2 —, allyl and CH 3 OCH 2 CH 2 —; and X is selected from the group consisting of F or OH; provided that when X is OH, R 3 is not H.