Patent ID: 8871786

Claim:
A compound of the formula (I): wherein Ar is phenyl, naphthyl or heteroaryl chosen from aziridinyl, thienyl, furanyl, thiazolyl, isothiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, pyrazolyl, thiadiazolyl, tetrazolyl, pyrrolyl, imidazolyl, pyrimidinyl, pyridinyl, pyrazinyl, pyridazinyl, pyranyl, benzofuranyl, indolyl, quinoxalinyl, benzimidazolyl, benzoxazolyl, benzothiazolyl, benzothienyl, quinolinyl, quinazolinyl, naphthyridinyl, indazolyl, triazolyl and purinyl each bearing from 0-4 substituents chosen from halogen, C 1-5 alkyl, C 3-7 cycloalkyl, C 1-5 haloalkyl, cyano, nitro, —SR, —OR, —SO 2 R, —SO 2 NRR 1 , —NR 1 —SO 2 R, —CO 2 —R, —NRR 1 , —NR 2 C(O)—R, —C(O)NRR 1 , aryl ring and 5- or 6-membered heteroaryl ring each ring optionally substituted with 1 or 2 substituents chosen from halogen and C 1-5 alkyl; R, R 1 , and, R 2 are each independently hydrogen or C 1-5 alkyl; X is halogen; or a pharmaceutically acceptable salt thereof.