二氢羊毛固醇 、
2,3,4-tri-O-benzyl-α-L-rhamnopyranosyl chloride 反应 1.0h,
以48%的产率得到(2S,3S,4R,5R,6R)-3,4,5-tris(benzyloxy)-2-methyl-6-(((3S,5R,10S,13R,14R,17R)-4,4,10,13,14-pentamethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,5,6,7,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl)oxy)tetrahydro-2H-pyran