4-nitrophenyl azide 、
N-Ethoxycarbonylmethyl-cis-endo-bicyclo<2.2.1>hept-5-en-2,3-dicarboximid 、
2-(1,3-dioxo-1,3,3a,4,7,7a-hexahydro-2H-4,7-methanoisoindol-2-yl)acetic acid 以
氯仿 为溶剂,
以71%的产率得到ethyl-2-{9-(4-nitrophenyl)-3,5-dioxo-4,9-diazatetracyclo[5.3.1.02-exo,6-exo.08-exo,12-exo]undec-4-yl}ethanoate