3-[(5-hydroxy-4-oxo-4H-pyran-2-yl)methyl]-1,2,3,4,5,6-hexahydro-8H-1,5-methanopyrido[1,2-a][1,5]diazocin-8-one 、
8-methoxy-3-nitrocoumarin 在
三乙胺 作用下,
以
乙腈 为溶剂,
反应 4.0h,
以72%的产率得到3-((5-hydroxy-6-(8-methoxy-2-oxo-2H-chromen-4-yl)-4-oxo-4H-pyran-2-yl)methyl)-1,2,3,4,5,6-hexahydro-8H-1,5-methanopyrido[1,2-a][1,5]diazocin-8-one