tert-Butyl 4-oxo-2-(pyridin-4-yl)-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidine-6(4H)-carboxylate 1g

tert-Butyl 4-oxo-2-(pyridin-4-yl)-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidine-6(4H)-carboxylate 1g