methyl 3,6-dioxocyclohexa-1,4-diene-1-carboxylate 、
(E)-1-<(2',3,4',6'-tetra-O-acetyl-β-D-glucopyranosyl)oxy>-3-trimethylsiloxybuta-1,3-diene 以
苯 为溶剂,
生成
、 methyl (1R,6R,10S)-2,5-dioxo-10-<(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)oxy>-8-trimethylsilyloxybicyclo<4.4.0>deca-3,8-diene-1-carboxylate