(1S,2R,3S,4R)-3-[2-(3-carboxy-7-oxabicyclo[2.2.1]hept-2-yl-methyl)phenyl]propionic acid methyl ester 在
dimethyl sulfide borane 、
sodium methylate 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 6.5h,
生成
(1S,2S,3S,4R)-3-[2-(3-formyl-7-oxabicyclo[2.2.1]hept-2-yl-methyl)phenyl]propionic acid methyl ester