acetic acid 4-allyloxy-2-trichloroacetimidoyloxy-5-triethylsilanyloxy-tetrahydro-pyran-3-yl ester 在
三氟甲磺酸三甲基硅酯 、
氟化氢吡啶 作用下,
以
二氯甲烷 为溶剂,
生成 dodecyl (2S)-2-[(3S,8R,9S,10R,13S,14S,16S,17S)-16-[(2S,3R,4S,5S)-3-acetyloxy-5-hydroxy-4-prop-2-enoxyoxan-2-yl]oxy-3,17-dihydroxy-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-yl]propanoate