De Andrade J.P.,University of Barcelona |
Pigni N.B.,University of Barcelona |
Torras-Claveria L.,University of Barcelona |
Guo Y.,University of Barcelona |
And 7 more authors.
Revista Latinoamericana de Quimica | Year: 2012
In recent years alkaloids from the genus Hippeastrum have been shown to exhibit a broad spectrum of biological activities, including antiparasitic, antiproliferative, apoptosis-induced, psychopharmacological, acetylcholinesterase-inhibitory, among others. This work presents a brief chemical and biological review of the alkaloids found in the genus Hippeastrum.
Hoffmann M.,Laboratoire Of Synthese |
Miaskiewicz S.,Laboratoire Of Synthese |
Weibel J.-M.,Laboratoire Of Synthese |
Pale P.,Laboratoire Of Synthese |
Blanc A.,Laboratoire Of Synthese
RSC Advances | Year: 2015
Although one of the first 2D NMR methods, but so far neglected, selective J-resolved NMR spectroscopy offers a unique opportunity to help organic chemists in structure elucidation, avoiding natural and non-natural product misassignments. This NMR method indeed allowed us to unambiguously and simply assign (natural) product structures exhibiting trisubstituted unsaturations. For example, as demonstrated here, the isomeric aurone, flavone, coumarin and isocoumarin structures could easily be distinguished; regioisomer assignments in furans could be solved, as well as isomerisms in compounds containing trisubstituted double-bonds (aurones, lactones, divinyl ketones). © The Royal Society of Chemistry 2015.