重氮甲烷 、
<1S-(1α,2β(Z),3α,4α)>-7-<3-<<2-<(phenylamino)carbonyl>hydrazino>methyl>-5-oxabicyclo<2.2.1>hept-2-yl>-5-heptenoic acid 以
乙醚 为溶剂,
以52%的产率得到methyl <1S-(1α,2β(Z),3α,4α)>-7-<3-<<2-<(phenylamino)carbonyl>hydrazino>methyl>-5-oxabicyclo<2.2.1>hept-2-yl>-5-heptenoate