A new and simple synthesis of N-succinimidyl-4-[127/125I]iodobenzoate involving a microwave - accelerated iodination step
作者:Ali Khalaj、Davood Beiki、Hamid Rafiee、Reza Najafi
DOI:10.1002/jlcr.451
日期:2001.3.15
A short and simple method for the preparation of N-succinimidyl-4-iodobenzoate 3 and its 125I analogue that is widely used for radioiodination of proteins is described. The method involves the reaction of in situ generated trimethylsilyl iodide [127I or 125I] from trimethylsilyl chloride with N-succinimidyl-4-[3,3-(1,4-butanediyl)-triazene] benzoate 2 available from the condensation of N-hydroxysuccinimide and 1-(4-carboxyphenyl)-3,3-(1,4-butanediyl)-triazene 1 in the presence of dicyclohexyl carbodiimide (DCC). The new triazene 1 was prepared by precipitating the diazonium ion of 4-aminobenzoic acid with pyrrolidine. A microwave-mediated rate acceleration was observed during the iodination step and by applying this procedure the labelled compound 3 was obtained in 81% radiochemical yield in 8 minutes. Copyright © 2001 John Wiley & Sons, Ltd.
介绍了一种制备N-琥珀酰亚胺基-4-碘苯甲酸酯3及其广泛用于蛋白质放射碘化的125I类似物的简便方法。该方法涉及现场生成的三甲基硅基碘化物[127I或125I]与N-琥珀酰亚胺基-4-[3,3-(1,4-丁二基)-三氮烯]苯甲酸酯2的反应,后者可通过N-羟基琥珀酰亚胺与1-(4-羧苯基)-3,3-(1,4-丁二基)-三氮烯1在二环己基碳二亚胺(DCC)存在下的缩合得到。新三氮烯1是通过将4-氨基苯甲酸的二氮烯离子与吡咯烷沉淀制备的。在碘化步骤中观察到微波介导的速率加速,通过应用此方法,在8分钟内获得了81%放射化学产率的标记化合物3。版权所有 © 2001 John Wiley & Sons, Ltd.