methyl 2-formyl-3-(4-methoxyphenyl)prop-2-enoate 、
3,4,6-tri-O-benzyl-2-ethenyl-D-glucal 以
甲苯 为溶剂,
反应 15.0h,
以65%的产率得到(2R,3S,4R,7S,8S,8aR)-methyl 3,4-bis(benzyloxy)-2-(benzyloxymethyl)-8-formyl-7-(4-methoxyphenyl)-3,4,6,7,8,8a-hexahydro-2H-chromene-8-carboxylate