4',5'-bis(1,2,3-dithioarsolan-2-yl)-fluorescein-5-carboxylic acid succinimidyl ester 、
N'-(4-azido-2-nitrophenyl)hexane-1,6-diamine 以
四氢呋喃 为溶剂,
反应 3.0h,
以77%的产率得到N-(6-(5-azido-2-nitrophenylamino)hexyl)-4',5'-di(1,3,2-dithiarsolan-2-yl)-3',6'-dihydroxy-3-oxo-3H-spiro-[isobenzofuran-1,9'-xanthene]-5-carboxamide