Interaction of Pd2+ complexes of 2,6-disubstituted pyridines with nucleoside 5′-monophosphates
作者:Oleg Golubev、Tuomas Lönnberg、Harri Lönnberg
DOI:10.1016/j.jinorgbio.2014.05.013
日期:2014.10
metal-ion-mediated recognition of nucleic acid bases, PdCl+ complexes of six 2,6-disubstituted pyridines, viz. pyridine-2,6-dicarboxamide, its N2,N6-dimethyl and N2,N6-diisopropyl derivatives, 6-carbamoylpyridine-2-carboxylic acid, 6-aminomethylpyridine-2-carboxamide and its N2-methyl derivative, were prepared and their interaction with nucleoside 5′-monophosphate (NMP) was studied by 1H NMR spectroscopy in D2O
Carboxylate binding in polar solvents using pyridylguanidinium salts
作者:Richard J. Fitzmaurice、Francesca Gaggini、Natarajan Srinivasan、Jeremy D. Kilburn
DOI:10.1039/b700988g
日期:——
A series of thiourea and guanidinium derivatives have been prepared and their ability to bind a carboxylate group has been investigated. Guanidinium 33, featuring two additional amides and a pyridine moiety, proved to be the most potent carboxylate binding site and was able to bind acetate in aqueous solvent systems (Kass = 480 M−1 in 30% H2O–DMSO). The pyridine moiety is critical to obtaining strong binding, and comparison with the binding properties of analogous compounds in which the pyridine is replaced by a benzene ring provides a striking example of enthalpy–entropy compensation.