N-(tert-butoxycarbonyl)glycyl-N1-[(1S)-2-azido-1-methylethyl]-N2-(2,4-dimethoxybenzyl)glycinamide   、                                                                                      
methyl (3α,5β,7α,12α)-3,7,12-tris{[(prop-2-yn-1-yloxy)acetyl]oxy}cholan-24-oate                                                                                                                                                              在
                                                                                                                                                                                 
copper(ll) sulfate pentahydrate   、                                                                                                  
sodium ascorbate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇   、                                                                                         
水                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                以86%的产率得到N-[(2S)-1-[4-[[2-[[(3R,5S,7R,8R,9S,10S,12S,13R,14S,17R)-7,12-bis[[2-[[1-[(2S)-2-[[2-[(2,4-dimethoxyphenyl)methyl-[2-[[hydroxy-[(2-methylpropan-2-yl)oxy]methylidene]amino]acetyl]amino]-1-hydroxyethylidene]amino]propyl]triazol-4-yl]methoxy]acetyl]oxy]-17-[(2R)-5-methoxy-5-oxopentan-2-yl]-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl]oxy]-2-oxoethoxy]methyl]triazol-1-yl]propan-2-yl]-2-[(2,4-dimethoxyphenyl)methyl-[2-[[hydroxy-[(2-methylpropan-2-yl)oxy]methylidene]amino]acetyl]amino]ethanimidic acid