Inframolecular protonation process of norbadione A: influence of the ionic environment and stereochemical consequences.

Abstract

The microscopic protonation mechanism, at an inframolecular level, of norbadione A, a pigment extracted from mushrooms and known to complex cesium cations, was determined by using 1H NMR titrations and the cluster expansion method. This study revealed a pH dependent Z to E isomer switch that occurs in both pulvinic moieties. As a consequence, norbadione A… (More)

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@article{Kuad2005InframolecularPP, title={Inframolecular protonation process of norbadione A: influence of the ionic environment and stereochemical consequences.}, author={Paul Kuad and Michal Borkovec and Marine Desage-El Murr and Thierry Le Gall and Charles Mioskowski and Bernard Spiess}, journal={Journal of the American Chemical Society}, year={2005}, volume={127 4}, pages={1323-33} }