乙酸酐 、
(1S,2R,3S,4R,7R,8R)-4-Benzoyloxymethyl-7,8-dihydroxy-3-phenyl-bicyclo[2.2.2]oct-5-ene-2-carboxylic acid methyl ester 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