6-azido-6-deoxy-1,2:3,4-di-O-isopropylidene-D-galactopyranose 、
(S)-methyl 3-(tert-butoxycarbonylamino)-4-oxo-4-(prop-2-ynylamino)butanoate 在
copper(ll) sulfate pentahydrate 、
维生素 C 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以88%的产率得到methyl (3S)-3-[(2-methylpropan-2-yl)oxycarbonylamino]-4-oxo-4-[[1-[[(1S,2R,6R,8R,9S)-4,4,11,11-tetramethyl-3,5,7,10,12-pentaoxatricyclo[7.3.0.02,6]dodecan-8-yl]methyl]triazol-4-yl]methylamino]butanoate