Glc2Ac3Ac4Ac6Ac(b1-2)[Xyl2Ac3Ac4Ac(b1-3)]Glc4Ac6Ac(b1-4)a-Gal1F2Ac3Ac6Ac 、
胆固醇 在
二氯二茂铪 、 silver perchlorate 作用下,
以
二氯甲烷 为溶剂,
以67%的产率得到[(2R,3S,4S,5R,6S)-4,5-diacetyloxy-3-[(2S,3R,4S,5R,6R)-5-acetyloxy-6-(acetyloxymethyl)-3-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-4-[(2S,3R,4S,5R)-3,4,5-triacetyloxyoxan-2-yl]oxyoxan-2-yl]oxy-6-[[(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]oxan-2-yl]methyl acetate