(S)-2-[(S)-2-(2-{2-[(S)-2-Azido-3-(4-hydroxy-phenyl)-propionylamino]-acetylamino}-acetylamino)-3-phenyl-propionylamino]-4-methyl-pentanoic acid amide 、
methyl 3,5-bis(prop-2-ynyloxy)benzoate 在
sodium ascorbate 、
copper(II) sulfate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以64%的产率得到3,5-Bis-{1-[(S)-1-{[({[(S)-1-((S)-1-carbamoyl-3-methyl-butylcarbamoyl)-2-phenyl-ethylcarbamoyl]-methyl}-carbamoyl)-methyl]-carbamoyl}-2-(4-hydroxy-phenyl)-ethyl]-1H-[1,2,3]triazol-4-ylmethoxy}-benzoic acid methyl ester