(4S,5S,6S,8S,9R,10R,11S,12S,13S,14S)-11-(benzyloxy)-14-(6-ethyl-3,5-dimethyl-4-oxo-4H-pyran-2-yl)-5,9,13-trihydroxy-4,6,8,10,12-pentamethylpentadecane-3,7-dione 、
三乙基硅基三氟甲磺酸酯 在
2,6-二甲基吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以44%的产率得到(4S,5S,6S,8S,9R,10S,11S,12S,13S,14S)-11-(benzyloxy)-14-(6-ethyl-3,5-dimethyl-4-oxo-4H-pyran-2-yl)-13-hydroxy-4,6,8,10,12-pentamethyl-5,9-bis((triethylsilyl)oxy)pentadecane-3,7-dione