Patent ID: 7186721

Claim:
A compound selected from the following group: 1-(3,4-Dimethoxyphenyl)-4-((S)-hexahydropyrrolo[1,2-a]pyrazin-2-yl)butane-1,4-dione, 1-(4-Chlorophenyl)-4-((S)-hexahydropyrrolo[1,2-a]pyrazin-2-yl)butane-1,4-dione, 1-(4-Chlorophenyl)-4-(octahydropyrido[1,2-a]pyrazin-2-yl)butane-1,4-dione, 1-(3-Fluoro-4-methoxyphenyl)-4-(octahydropyrido[1,2-a]pyrazin-2-yl)butane-1,4-dione, 1-(3,4-Dimethoxyphenyl)-4-(octahydropyrido[1,2-a]pyrazin-2-yl)butane-1,4-dione, 1-(3-Fluoro-4-methoxyphenyl)-4-((S)-octahydropyrido[1,2-a]pyrazin-2-yl)butane-1,4-dione, 1-(3-Fluoro-4-methoxyphenyl)-4-((R)-octahydropyrido[1,2-a]pyrazin-2-yl)butane-1,4-dione; (S)-Octahydropyrido[1,2-a]pyrazine-2-carboxylic acid 2-(4-methoxyphenyl)ethyl ester, (R)-Octahydropyrido[1,2-a]pyrazine-2-carboxylic acid 2-(3-(trifluoromethyl)phenyl)ethyl ester, [3,5-Difluoro-4-((R)-octahydropyrido[1,2-a]pyrazin-2-yl)phenyl]-[phenyl]methanone, (4-Fluorophenyl)-[4-((R)-octahydropyrido[1,2-a]pyrazin-2-yl)phenyl]methanone, {[4-((R)-Octahydropyrido[1,2-a]pyrazin-2-yl)phenyl]}-{phenyl}methanone, and (R)-2-[6-(4-Trifluoromethyl-phenyl)-pyridazin-3-yl]-octahydro-pyrido[1,2-a]pyrazine, as well as any diastereomer or enantiomer or tautomeric form thereof or mixtures of these or a pharmaceutically acceptable salt thereof.