191338-96-2
4-[[(1,1-二甲基乙氧基)羰基]氨基]-A-羰基-3-吡啶乙酸乙酯
→
~69%
169037-38-1
1H-吡咯并[3,2-c]吡啶-2,3-二酮(9ci)
98400-69-2
4-(Boc-氨基)吡啶