allyl O-methyl-N-(((3R)-1-((2,2,2-trichloroethoxy)carbonyl)-2-(((3S)-1-((2,2,2-trichloroethoxy)carbonyl)-2-(N-((2,2,2-trichloroethoxy)carbonyl)-D-valyl)hexahydropyridazin-3-yl)carbonyl)hexahydropyridazin-3-yl)carbonyl)-L-seryl-O-(tert-butyl(dimethyl)silyl)-D-threoninate 在
吗啉 、
四(三苯基膦)钯 作用下,
反应 16.0h,
以84%的产率得到O-methyl-N-(((3R)-1-((2,2,2-trichloroethoxy)carbonyl)-2-(((3S)-1-((2,2,2-trichloroethoxy)carbonyl)-2-(N-((2,2,2-trichloroethoxy)carbonyl)-D-valyl)hexahydropyridazin-3-yl)carbonyl)hexahydropyridazin-3-yl)carbonyl)-Lseryl-O-(tert-butyl(dimethyl)silyl)-D-threonine