Spin‐labeled derivatives of cardiotonic steroids as tools for characterization of the extracellular entrance to the binding site on Na
<sup>+</sup>
,K
<sup>+</sup>
‐
<scp>ATP</scp>
ase
作者:Jin‐Hua Guo、Ren‐Wang Jiang、Jacob Lauwring Andersen、Mikael Esmann、Natalya U. Fedosova
DOI:10.1111/febs.14480
日期:2018.6
the reporting group (N-O) confined to the bindingsite. High affinity to Na+ ,K+ -ATPase is inferred from their ability to inhibit enzymatic activity. The differences between the EPR spectra in the absence and presence of high ouabain concentrations identify the signature peaks originating from the fraction of the spin labels bound within the ouabain site. The degree of perturbations of the EPR spectra
Reactions of nitroxides XIV. Analogs of phenoxy carboxylic herbicides based on the piperidine scaffold; unexpected fungicidal activity of the 2-[(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl)oxy]butanoic acid
作者:Jerzy Zakrzewski、Maria Krawczyk
DOI:10.1515/hc-2013-0169
日期:2014.4.1
Abstract Alkanoic acid derivatives bearing a nitroxyl moiety 3a–e were synthesized from 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (1) and the corresponding 2-bromoalkane carboxylic acids 2a–e. The herbicidal and antifungal activity of 3a–e was tested. No herbicidal activity of the tested compounds was found. The 2-[(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl)oxy]butanoic acid 3c revealed a strong