Ethyl 8-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylate

2-氟-4-吡啶甲醇

5-溴-2-甲基氨基-4-甲基吡啶

N-(4-甲基-2-吡啶)-3-氧代-丁酰胺

tert-butyl 3-amino-4-phenacylpyridine-2-carboxylate