A compound selected from the group consisting of: 9-Bromo-2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 9-Bromo-2-phenyl-2,6-dihydro[1,2,4] triazolo [4,3-c]quinazoline-3,5-dione, 9-Bromo-2-(4-chlorophenyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 9-Bromo-2-(2-fluorophenyl)-2,6-dihydro[1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 9-Methyl-2-phenyl-2,6-dihydro[1,2,4] triazolo [4,3-c]quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-(phenylethynyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-(2-phenylethyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(3-thienyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(2-pyridyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(3-pyridyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(4-pyridyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(4-phenoxyphenyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 9-[2-(Biphen-4-yl) ethyl)]- 2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo [4,3-c]-quinazoline-3,5-dione, 9-[2-(3-hydroxyphenyl) ethyl]-2-(4-Methylphenyl)-2,6-dihydro [1,2,4] triazolo [4,3-c]-quinazoline-3,5-dione, 9-Benzyl-2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo [4,3-c] quinazoline-3,5-dione, 9-(3-Fluorobenzyl)-2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-(3-thienylmethyl)-2,6-dihydro [1,2,4] triazolo[4,3-c] quinazoline-3,5-dione, 3-[2-(4-Methylphenyl)-3,5-dioxo-2,6-dihydro [1,2,4] triazolo [4,3-c] quinazolin-9-yl] propanoic acid, and pharmaceutically acceptable salts thereof. 9-Bromo-2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 9-Bromo-2-phenyl-2,6-dihydro[1,2,4] triazolo [4,3-c]quinazoline-3,5-dione, 9-Bromo-2-(4-chlorophenyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 9-Bromo-2-(2-fluorophenyl)-2,6-dihydro[1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 9-Methyl-2-phenyl-2,6-dihydro[1,2,4] triazolo [4,3-c]quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-(phenylethynyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-(2-phenylethyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(3-thienyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(2-pyridyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(3-pyridyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(4-pyridyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-[2-(4-phenoxyphenyl) ethyl]-2,6-dihydro [1,2,4] triazolo[4,3-c]-quinazoline-3,5-dione, 9-[2-(Biphen-4-yl) ethyl)]- 2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo [4,3-c]-quinazoline-3,5-dione, 9-[2-(3-hydroxyphenyl) ethyl]-2-(4-Methylphenyl)-2,6-dihydro [1,2,4] triazolo [4,3-c]-quinazoline-3,5-dione, 9-Benzyl-2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo [4,3-c] quinazoline-3,5-dione, 9-(3-Fluorobenzyl)-2-(4-methylphenyl)-2,6-dihydro [1,2,4] triazolo[4,3-c]quinazoline-3,5-dione, 2-(4-Methylphenyl)-9-(3-thienylmethyl)-2,6-dihydro [1,2,4] triazolo[4,3-c] quinazoline-3,5-dione, 3-[2-(4-Methylphenyl)-3,5-dioxo-2,6-dihydro [1,2,4] triazolo [4,3-c] quinazolin-9-yl] propanoic acid, and pharmaceutically acceptable salts thereof.