Tatsis, Evangelos C. Schaumlöffel, Anu Warskulat, Anne C. Massiot, Georges Schneider, Bernd Bringmann, Gerhard Nudicaulins, Yellow Flower Pigments of <i>Papaver nudicaule</i>: Revised Constitution and Assignment of Absolute Configuration The constitution of the aglycon of nudicaulin has been revised to be a pentacyclic indole alkaloid. The relative and absolute configurations of the two diastereomers, nudicaulins I (<b>3a</b>) and II (<b>3b</b>), have been assigned by NMR, conformational analyses, and interpretation of the experimental ECD spectra by quantum-chemical calculations. interpretation;calculation;Nudicaulin;pentacyclic indole alkaloid;Papaver nudicaule;Revised Constitution;Yellow Flower Pigments;ECD spectra;Assignment;nudicaulin;diastereomer;II;analyses;configuration;Absolute ConfigurationThe constitution;NMR;aglycon 2013-01-04
    https://acs.figshare.com/articles/journal_contribution/Nudicaulins_Yellow_Flower_Pigments_of_i_Papaver_nudicaule_i_Revised_Constitution_and_Assignment_of_Absolute_Configuration/2455564
10.1021/ol303211w.s001