Patent ID: 6846818

Claim:
A compound of formula I: or a pharmaceutically-acceptable salt thereof; wherein X is hydrogen, halogen, —NO 2 , (C 1 -C 6 )alkyl, —CF 3 , (C 3 -C 8 )cycloalkyl, (C 1 -C 6 )alkyl-O—, (C 1 -C 6 )alkyl-S—, (C 1 -C 6 )alkyl-SO—, (C 1 -C 6 )alkyl-SO 2 —; (C 1 -C 6 )alkyl-(C═O)—, (C 6 -C 10 )aryl-(C═O)—, (C 1 -C 10 )heteroaryl-(C═O)—, (C 1 -C 10 )heterocyclyl-(C═O)—, (C 1 -C 6 )alkyl-NH—(C═O)—, (C 6 -C 10 )aryl-NH—(C═O)—, or [(C 1 -C 6 )alkyl] 2 -N—SO 2 —; Y is hydrogen, halogen, —NO 2 , (C 1 -C 6 )alkyl, —CF 3 , (C 3 -C 8 )cycloalkyl, (C 1 -C 6 )alkyl-O—, (C 1 -C 6 )alkyl-S—, (C 1 -C 6 )alkyl-SO—, (C 1 -C 6 )alkyl-SO 2 —; (C 1 -C 6 )alkyl-(C═O)—, (C 6 -C 10 )aryl-(C═O)—, (C 1 -C 10 )heteroaryl-(C═O)—, (C 1 -C 10 )heterocyclyl-(C═O)—, (C 1 -C 6 )alkyl-NH—(C═O)—, (C 6 -C 10 )aryl-NH—(C═O)—, or [(C 1 -C 6 )alkyl] 2 -N—SO 2 —; n is 0, 1 or 2; Q is a 6-membered heterocyclic divalent radical of pyran, piperidine, 1,4-dioxane, morpholine, dithiane, thiomorpholine, pyridazine, piperazine, pyridine, pyrimidine, pyrazine, 1,3,5-triazine, or 1,3,5-trithiane; R 1 is hydrogen, halogen or (C 1 -C 6 )alkyl; and R 2 is (C 1 -C 6 )alkyl or (C 3 -C 8 )cycloalkyl.