Methyl endo-11-acetoxy-8-(4-tert-butyloxycarbonyl-3-oxobutyl)-exo-3,4-epoxy-5,5-ethylenedioxy-exo-2-methoxy-7-oxotricyclo<7.2.1.04,10>dodecane-8-carboxylate 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 9.0h,
以72%的产率得到Methyl 8-tert-butoxycarbonyl-exo-3,4-epoxy-5,5-ethylenedioxy-endo-15-hydroxy-exo-2-methoxy-9-oxotetracyclo<11.2.1.0
4,10.0
7,12>hexadec-7-ene-12-carboxylate