dimethyl (2aR,3S,10R,10aS)-4,9-dioxo-2a,3,4,9,10,10a-hexahydro-3,10-methanocyclobuta[b]anthracene-1,2-dicarboxylate 、 7,8-diazaphencyclone 以
氯仿 为溶剂,
反应 6.0h,
以63%的产率得到(1α,2β,3α,4β,15β,16α,17β,18α) dimethyl 1,18-dimethyl-6,13,33-trioxo-24,27-diaza-decacyclo[16.14.1.1
4,15.0
2,17.0
3,16.0
5,14.0
7,12.0
19,32.0
20,25.0
26,31]tetratriaconta-5(14),(12),8,10,19,21,23,25,27,29,31-undecaen-2,17-dicarboxylate