Formation of anti- versus syn-dinuclear CuII complexes from bis-glycinamide ligands. Synergistic roles of a His/His dyad and supporting-ligand backbones in CuII binding
摘要:
A competitive formation of 'anti' symmetric di-Cu-II and 'syn' non-symmetric decarboxylated di-Cu(II)complexes was established from a systematic study of Cu-II binding to aminocarboxylate-based bis-glycinamide ligands featuring a His/His dyad, due to the Delta-Lambda interconversion of backbone conformation which gave rise to anti versus syn binding for the 2nd Cu-II. The findings provide a facile strategy for the investigation of novel di-Cu-II mimics. (C) 2015 Elsevier Ltd. All rights reserved.
Carbonic Anhydrase Inhibitors. A General Approach for the Preparation of Water-Soluble Sulfonamides Incorporating Polyamino−Polycarboxylate Tails and of Their Metal Complexes Possessing Long-Lasting, Topical Intraocular Pressure-Lowering Properties
作者:Andrea Scozzafava、Luca Menabuoni、Francesco Mincione、Claudiu T. Supuran
DOI:10.1021/jm0108202
日期:2002.3.1
isozymes I, II, and IV of carbonic anhydrase (CA). Metal complexes of the new compounds have also been prepared. Metal ions used in such preparations included di- and trivalent main-group and transition cations, such as Zn(II), Cu(II), Al(III), etc. Some of the new sulfonamides/disulfonamides obtained in this way, as well as their metal complexes, behaved as nanomolar CA inhibitors against isozymes II and
N,N′-bis(carboxymethyl) macrocyclicdilactams were synthesized in good to high yields from diamines and dianhydrides. Their ligand protonation and lanthanide complex stability constants were measured by a potentiometric method in aqueous solution. The lanthanidediscriminating power of 12- and 18-membered macrocyclicdilactams derived from EDTA and EGTA measured by their stability constants were compared
Zincturns it on! Conjugation of the fluorescence dye diaminoterephthalate with EDTA results in a constitutionally very simple sensor (DAT)2EDTA with remarkable selectivity towards Zn2+ ions. In the presence of one equivalent of Zn(OAc)2 in solution, the fluorescence quantum yield is increased by factor of about six!
Multinuclear and multifrequency NMR study of gadolinium(III) complexes with bis-amide derivatives of ethylenedioxydiethylenedinitrilotetraacetic acid
作者:Silvio Aime、Alessandro Barge、Mauro Botta、Luca Frullano、Ugo Merlo、Kenneth I. Hardcastle
DOI:10.1039/b004579i
日期:——
constants of the complexes were obtained from potentiometric data and are about five orders of magnitude lower than for the parent [Gd(egta)]− complex. The magnetic field dependence of the proton relaxivity at 6, 25 and 39 °C was quantitatively analysed in order to obtain the relaxation parameters and indicated that one water molecule occupies a site of the co-ordination sphere of the complexes. The temperature
BIODEGRADABLE METAL-CHELATING POLYMERS AND VACCINES
申请人:Turnell William G.
公开号:US20100004390A1
公开(公告)日:2010-01-07
The invention provides metal-chelating poly(ether amide) polymers useful in preparation of polymer compositions for delivering a variety of cargo molecules, such as bioactive agents. In solution metal ions and cargo molecules, such as vaccine epitopes, that include metal avid amino acids can be loaded into the polymer compositions and held in a non-covalent complex. Nanoparticles of such polymer compositions can also be prepared directly from the solution.