2-pyridin-2-yl-2-azaspiro[4.5]decane-1,3-dione

3-phenylpyrido[1,2-a]pyrimidine-2,4-dione

pyridin-2-yl-trityl-amine

3,6-diiodo-2-(5-iodofuran-2-yl)imidazo[1,2-a]pyridine

4-氧代-4-(吡啶-2-基氨基)丁酸