Journal
TETRAHEDRON
Volume 56, Issue 29, Pages 5093-5103Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(00)00424-5
Keywords
In(III) complexes; bifunctional ligand; diaminodithiol
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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.
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