二亚乙基三胺五乙酸二酐 、
13-oxo-3,6,9-trioxa-12-azatriacontanylamine 以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 2.0h,
以75%的产率得到6,9-bis(carboxymethyl)-3-(2,16-dioxo-6,9,12-trioxa-3,15-diazatriatriacontanyl)-11,25-dioxo-15,18,21-trioxa-3,6,9,12,24-pentaazadotetracontanoic acid