4,4'-双甲氧基三苯甲基氯 、
pregnenolone 3β-D-glucopyranoside 、
乙酸酐 以
吡啶 为溶剂,
以79%的产率得到(2R,3R,4S,5R,6R)-2-(((3S,8S,9S,10R,13S,14S,17S)-17-acetyl-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl)oxy)-6-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate