O-(N-succinimidyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
9 cascade:nitro[1]:(3-oxo-2-azapropylidyne):(3-oxo-2-azapentylidyne):propanoic 在
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
生成 Bis(2,5-dioxopyrrolidin-1-yl) 4-[[7-[[1,7-bis[(2,5-dioxopyrrolidin-1-yl)oxy]-4-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropyl]-1,7-dioxoheptan-4-yl]amino]-4-[3-[[1,7-bis[(2,5-dioxopyrrolidin-1-yl)oxy]-4-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropyl]-1,7-dioxoheptan-4-yl]amino]-3-oxopropyl]-4-nitro-7-oxoheptanoyl]amino]-4-[3-(2,5-dioxopyrrolidin-1-yl)oxy-3-oxopropyl]heptanedioate