methyl (2R,8S)-8-<(S)-(1-acetoxy-1-phenyl)acetoxy>methyl-4-benzyloxy-6-t-butoxycarbonyl-3-formyl-1,2,3,6,7,8-hexahydro-2-methyl-1-oxobenzo<1,2-b;4,3-b'>dipyrrole-2-carboxylate 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
以100%的产率得到methyl (2R,8S)-4-benzyloxy-6-t-butoxycarbonyl-3-formyl-1,2,3,6,7,8-hexahydro-8-hydroxymethyl-2-methyl-1-oxobenzo<1,2-b;4,3-b'>dipyrrole-2-carboxylate