G. Gamov, A. N. Meshkov, M. Zavalishin
May 1, 2020
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0
Influential Citations
9
Citations
Journal
Journal of Molecular Liquids
Abstract
Abstract The protonation of hydrazones derived from pyridoxal 5′-phosphate and hydrazides of isonicotinic, 2-furoic, thiophene-2-carboxylic, thiophene-3-carboxylic, and pyrazinoic acids is studied using 13C NMR and electron absorption spectroscopy. The order of proton binding to hydrazones is determined to be as follows: 1) imine nitrogen, 2) phosphate group and 3) presumably heteronitrogen or oxygen in the 3-site of the pyridoxal 5′-phosphate residue. The protonation constants lg β1, lg β2, and lg β3 are determined using UV–Vis and NMR results. The new freeware for the calculation of stability constants from NMR experimental data is developed. A molecular docking study of different protonated species of hydrazones and bovine serum albumin is performed.