3-ethylthieno[3,2-d]pyrimidine-2,4(1H,3H)-dione

N-(4-methoxyphenyl)-N'-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)guanidine

N-(2-furylmethyl)-N'-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)guanidine

2-[(3,4-dimethylphenyl)amino]-5,6-dimethylpyrimidin-4(3H)-one

2-[(3,5-dichlorophenyl)amino]-5,6-dimethylpyrimidin-4(3H)-one

6-methyl-2-pyrrolidin-1-ylpyrimidin-4(3H)-one

3-ethyl-6,7-dimethyl-4-methylene-3,4-dihydroquinazolin-2(1H)-one

methyl (4-oxo-1,4-dihydropyrimido[1,2-a]benzimidazol-2-yl)acetate

5H-indolo[2,1-c][1,4]benzodiazepine-6,12(5aH,7H)-dione

7-benzyl-5-methylpyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidin-6(7H)-one

ethyl 5,7-dimethyl[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate