三乙基氯硅烷 、 (2R,6S,6aS,7R,8aS,9R,11R,12aR,12bS,13S)-7,9-dihydroxy-6,11,12b,13-tetramethyl-4-oxotetradecahydro-2H-2,6-methanonaphtho[1,2-d]oxocine-13-carbaldehyde 在
咪唑 作用下,
以
二氯甲烷 为溶剂,
反应 24.0h,
以76%的产率得到(1S,2S,3R,5S,6R,8R,10R,11S,13R,17S)-1,8,11,17-tetramethyl-15-oxo-3,6-bis(triethylsilyloxy)-14-oxatetracyclo[11.3.1.02,11.05,10]heptadecane-17-carbaldehyde