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
AbstractAn unexpected reaction of cinobufagin analogues in the presence of PPh3/I2 in EtOAc at room temperature to obtain diene compounds has been described. The whole process is carried out under mild conditions and the desired products are formed in good yields. It provides a simple, effective, and novel reaction method for the synthesis of diene compounds from corresponding substrates. Graphic abstract
摘要已经描述了烟蟾毒素类似物在PPh 3 / I 2存在下在室温下于EtOAc中的意外反应以获得二烯化合物。整个过程在温和的条件下进行,并以高收率形成所需的产物。它为从相应的底物合成二烯化合物提供了一种简单,有效和新颖的反应方法。 图形摘要