5-(4-amino-2-fluorophenylamino)-8-methylpyrido[2,3-d]pyrimidine-4,7(3H,8H)-dione
3-(4-methoxybenzyl)-6-(methylamino)pyrimidin-4(3H)-one
3-benzyl-6-(methylamino)pyrimidin-4(3H)-one
(R)-5-(4-bromo-2-fluorophenylamino)-3-(2,3-dihydroxypropyl)-8-methylpyrido[2,3-d]pyrimidine-4,7(3H,8H)-dione
5-chloro-3-(4-methoxybenzyl)-6,8-dimethylpyrido[2,3-d]pyrimidine-4,7(3H,8H)-dione