[(3S,5R,6S,8R,9R,10R,12R,13R,14R,17S)-3-[tert-butyl(dimethyl)silyl]oxy-6-hydroxy-17-[(2S)-2-hydroxy-6-methylhept-5-en-2-yl]-4,4,8,10,14-pentamethyl-2,3,5,6,7,9,11,12,13,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-12-yl] 2,2-dimethylpropanoate 、
2,3,4,6-tetra-O-benzoyl-D-glucopyranosyl ortho-cyclopropylethynylbenzoate 在
三苯基膦双(三氟甲磺酰亚胺)金 作用下,
以
二氯甲烷 为溶剂,
以78%的产率得到