Evaluation of the binding ability of tetraaza[2]arene[2]triazine receptors anchoring l-alanine units for aromatic carboxylate anions
作者:Ana I. Vicente、João M. Caio、João Sardinha、Cristina Moiteiro、Rita Delgado、Vítor Félix
DOI:10.1016/j.tet.2011.10.090
日期:2012.1
The binding affinities of three new tetraaza[2]arene[2]triazine based macrocycles anchoring one (AC1A) and two (AC2A and Me4AC2A) l-alanine amino acid units for five aromatic carboxylateanions (bz−, ph2−, iph2−, tph2− and btc3−) were investigated in DMSO-d6. 1H NMR titrations revealed that the AC1A and AC2A receptors exhibit comparable anion affinities, suggesting that the two l-alanine binding units