methyl 4-[4,4-dicyano-3-(2-dimethylaminovinyl)but-3-enyl]benzoate

diethyl N-{4-[2-(2-amino-3,4-dihydro-4-oxopyrido[2,3-d]pyrimidin-5-yl)ethyl]benzoyl}-L-glutamate

methyl 4-[2-(2-chloro-3-cyanopyrid-4-yl)ethyl]benzoate

methyl 4-[2-(2,4-diaminopyrido[2,3-d]pyrimidin-5-yl)ethyl]benzoate

diethyl N-{4-[2-(2-amino-3,4,5,6,7,8-hexahydro-4-oxopyrido[2,3-d]pyrimidin-5-yl)ethyl]benzoyl}-L-glutamate