N-5-fluorescein-N'-6-maleimidohexanoyl-Lys-OH 、
N-6-fluorescein-N'-6-maleimidohexanoyl-Lys-OH 、 amino-PEG12-propionic acid 2-(CoA-S-succinimido)ethylamide 在
benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成 N'-6-fluorescein-N"-6-maleimidohexanoyl-Lys-amido-PEG12-propionic acid 2-(CoA-S-succinimido)ethylamide 、 N'-5-fluorescein-N"-6-maleimidohexanoyl-Lys-amido-PEG12-propionic acid 2-(CoA-S-succinimido)ethylamide