(2ξ,3R,4S,5S)-2-cyanomethyl-4,5-epoxy-3-methoxycarbonyl-4,5-dimethyl-1-cyclopentanone 在
sodium tetrahydroborate 作用下,
以
吡啶 、
甲醇 为溶剂,
反应 2.5h,
生成
(1S,2R,3R,4R,5R)-4-Acetoxy-3-cyanomethyl-1,5-dimethyl-6-oxa-bicyclo[3.1.0]hexane-2-carboxylic acid methyl ester