5-fluoro-N-methyl-N-(1-{3-methyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl}azetidin-3-yl)pyrimidin-4-amine

2-(9-(2,4-dimethoxyphenyl)-1,7-dimethyl-2,4-dioxo-1,2,6,7,8,9-hexahydropyrimido[2,1-f]purin-3(4H)-yl)acetamide

2-(4-methoxyphenyl)-N-(2-(propylsulfonyl)-1,2,3,4-tetrahydroisoquinolin-7-yl)ethanesulfonamide

8-(2-hydroxyethyl)-1,7-dimethyl-3-phenethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

8-((dibenzylamino)methyl)-7-(3,3-dimethyl-2-oxobutyl)-1,3-dimethyl-1H-purine-2,6(3H,7H)-dione

methyl 2-(8-(4-methoxyphenyl)-1,7-dimethyl-2,4-dioxo-1H-imidazo[2,1-f]purin-3(2H,4H,8H)-yl)propanoate

methyl 2-(1,7,8-trimethyl-2,4-dioxo-1H-imidazo[2,1-f]purin-3(2H,4H,8H)-yl)acetate

3-(3-chlorobenzyl)-8-ethyl-1,7-dimethyl-1H-imidazo[2,1-f]purine-2,4(3H,8H)-dione

2-(Chloromethyl)-4-methoxybenzoxazole

8-(2,4-Dimethoxyphenyl)-1,6,7-trimethyl-3-(1-methyl-2-oxopropyl)-1,3,5-trihydr o-4-imidazolino[1,2-h]purine-2,4-dione

6-Butyl-4,7,8-trimethyl-2-(2-oxopropyl)purino[7,8-a]imidazole-1,3-dione