N-2-methoxyethyl-(1H,1H,2H,2H,4H,4H,-3,6,9,12-tetraoxaperfluorohexadecyl)-amine 、 5-[bis(2-{[1-(sodium sulphonatobutyl)-3-hydroxy-6-methyl-2-oxo-1,2-dihydro-pyridine-4-carbonyl]amino}ethyl)amino]-4-{[1-(sodium sulphonatobutyl)-3-hydroxy-6-methyl-2-oxo-1,2-dihydropyridine-4-carbonyl]amino}pentanecarboxylic acid, gadolinium complex 在
N-羟基丁二酰亚胺 、
N,N'-二环己基碳二亚胺 作用下,
以
二甲基亚砜 为溶剂,
反应 16.0h,
以46%的产率得到5-[bis(2-{[1-(sodium sulphonatobutyl)-3-hydroxy-6-methyl-2-oxo-1,2-dihydro-pyridine-4-carbonyl]amino}ethyl)amino]-4-{[1-(sodium sulphonatobutyl)-3-hydroxy-6-methyl-2-oxo-1,2-dihydropyridine-4-carbonyl]amino}pentanecarboxylic acid [N-(1H,1H,2H,2H,4H,4H,-3,6,9,12-tetraoxaperfluorohexadecyl)-N-(2-methoxyethyl)]amide, gadolinium complex