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

6-amino-2-[(4-methylphenyl)amino]pyrimidin-4(3H)-one

6-amino-2-[(2-phenylethyl)amino]pyrimidin-4(3H)-one

2-pyridin-4-yl[1,2,4]triazolo[1,5-a][1,3,5]triazin-7-amine

N'-[1-(4-ethoxyphenyl)-2,5-dioxopyrrolidin-3-yl]piperidine-3-carbohydrazide

4-[(E)-2-(dimethylamino)vinyl]-8-phenylpyrazolo[5,1-c][1,2,4]triazine-3-carbonitrile

(2-methyl-6-oxopyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidin-7(6H)-yl)acetic acid

7-hydroxy-2,5-dimethylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid

ethyl 2-[(2-chlorobenzyl)thio]-7-methyl[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylate

4-(2-methoxyphenyl)-1,4-dihydro[1,3,5]triazino[1,2-a]benzimidazol-2-amine