3-Acetoxy-5,6-dimethoxy-7-oxa-bicyclo[2.2.1]hept-5-ene-2,2-dicarboxylic acid dimethyl ester 在
10% palladium on active carbon sodium tetrahydroborate 、
potassium carbonate 作用下,
以
甲醇 为溶剂,
生成
dimethyl (5β-hydroxy-3α,4α-dimethoxytetrahydro-2H-pyran-2β-yl)malonate