propargyl 3α-azidoacetoxy-7α,12α-diformyloxy-5β-cholan-24-oate 在
copper(ll) sulfate pentahydrate 、
sodium ascorbate 作用下,
以
水 、
N,N-二甲基甲酰胺 为溶剂,
以4.6%的产率得到prop-2-ynyl (4R)-4-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3-[2-[4-[[(4R)-4-[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-3-(2-azidoacetyl)oxy-7,12-diformyloxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoyl]oxymethyl]triazol-1-yl]acetyl]oxy-7,12-diformyloxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]pentanoate