Synthesis of a New Diaminodithiol Bifunctional Chelator for Radiolabeling Biomolecules with Indium(III)
作者:Yizhen Sun、Arthur E. Martell、Michael J. Welch
DOI:10.1016/s0040-4020(00)00424-5
日期:2000.7
The synthesis of a new bifunctional ligand 1-(p-carboxybenzyl)-N,N'-bis-[1,1-dimethyl-1-(p-methoxybenzylthio)ethyl]-ethylenediamine-N,N'-diacetic acid, di-t-butyl ester (1, nbi6ss) is described. It consists of a carboxybenzyl group substituted on a carbon atom of the ethylenediamine moiety of a hexadentate ligand, which has been found to have a very high affinity for In(III). The gem-dimethylthiol groups and the carboxylic acid groups of the ligand were protected by groups that can be removed under mild conditions after conjugation to a peptide or protein. (C) 2000 Elsevier Science Ltd. All rights reserved.