Patent ID: 8211914

Claim:
A compound of formula (I): wherein: X is C, O or N; Y is C or N; Z is C or N; W is C or S, wherein if W is S, then R2 is absent; R1 is unsubstituted heteroaryl, unsubstituted aryl, or aryl substituted with —OCF3; R2 is H, lower alkyl or haloloweralkyl; R3 is phenyl, pyridine or pyrimidine; and R4 is -piperidine-trifluoromethylphenyl, -piperazine-1-yl-benzoic acid lower alkyl ester, -piperazine-pyrimidine, -piperazine-lower alkoxy phenyl, -piperazine-trifluoromethylphenyl, -hydroxy-piperidine-lower alkoxy phenyl, -piperazine-phenyl, -hydroxy-piperidine-phenyl, -piperidine-phenyl, -hydroxy piperidine-trifluoromethylphenyl, -piperidine-trifluoromethylphenyl, -piperazine-halo phenyl, -piperazine-benzoic acid, -piperidine-lower alkyl oxadiazole, -piperidine-cycloloweralkyloxadiazole, -pyrrolidine-lower alkyl oxadiazole, -piperidine-pyridinecarboxylic acid, —O-pyrrolidine-benzoic acid, —O-pyrrolidine-benzoic acid lower alkyl ester, -pyrrolidine-benzoic acid lower alkyl ester, -pyrrolidine-benzoic acid, -piperidine-benzoic acid, or -piperidine-benzoic acid lower alkyl ester; or a pharmaceutically acceptable salt thereof.