丁二酸酐 、
6-(2,5-Dioxo-2,5-dihydro-pyrrol-1-yl)-hexanoic acid {6-amino-2-[6-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-hexanoylamino]-hexyl}-{2-[6-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-hexanoylamino]-ethyl}-amide 在
草酰氯 、
三乙胺 作用下,
生成 3-[5-[6-(2,5-Dioxo-2,5-dihydro-pyrrol-1-yl)-hexanoylamino]-6-([6-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-hexanoyl]-{2-[6-(2,5-dioxo-2,5-dihydro-pyrrol-1-yl)-hexanoylamino]-ethyl}-amino)-hexylcarbamoyl]-propionyl chloride