(R)-(-)-α-methoxyphenylacetyl chloride 、
(1S,2S,3R,4R)-1-Acetoxymethyl-4-hydroxymethyl-7-oxa-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid dimethyl ester 在
吡啶 作用下,
以78%的产率得到(1S,2S,3R,4R)-1-Acetoxymethyl-4-((R)-2-methoxy-2-phenyl-acetoxymethyl)-7-oxa-bicyclo[2.2.1]heptane-2,3-dicarboxylic acid dimethyl ester