(1S,2R,3S,4R,5R)-3-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-5-hydroxy-1-methoxymethoxy-4-methyl-bicyclo[2.2.2]octane-2-carboxylic acid methyl ester 在
重铬酸吡啶 、 molecular sieve 作用下,
以
二氯甲烷 为溶剂,
反应 4.0h,
以87%的产率得到methyl (1S, 2R, 3S, 4R, 4'S)-1-methoxymethyloxy-4-methyl-3-(2',2'-dimethyl-1',3'-dioxolan-4'-yl)-5-oxobicyclo<2.2.2>octane-2-carboxylate