乙酸酐 、
methyl (1S)-exo-5-acetoxy-4-<(benzoyloxy)methyl>-endo-6-hydroxy-exo-3-phenylbicyclo<2.2.2>oct-8-ene-endo-2-carboxylate 在
吡啶 作用下,
以100%的产率得到(1S,2R,3S,4R,7R,8R)-7,8-Diacetoxy-4-benzoyloxymethyl-3-phenyl-bicyclo[2.2.2]oct-5-ene-2-carboxylic acid methyl ester