(((2-methyl-2-((prop-2-yn-1-yloxy)carbonyl)propane-1,3-diyl)bis(oxy))bis(carbonyl))bis(2-methylpropane-2,1,3-triyl) tetrakis(3-hydroxy-2-(hydroxymethyl)-2-methylpropanoate) 、
N,N'-di-tert-butoxycarbonyl-3-aminopropionic acid anhydride 在
吡啶 、
4-二甲氨基吡啶 作用下,
以
二氯甲烷 为溶剂,
以86%的产率得到[2-Methyl-3-[2-methyl-2-[[2-methyl-3-[2-methyl-3-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxy]-2-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxymethyl]propanoyl]oxy-2-[[2-methyl-3-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxy]-2-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxymethyl]propanoyl]oxymethyl]propanoyl]oxymethyl]-3-oxo-3-prop-2-ynoxypropoxy]-2-[[2-methyl-3-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxy]-2-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxymethyl]propanoyl]oxymethyl]-3-oxopropyl] 2-methyl-3-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxy]-2-[3-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyloxymethyl]propanoate