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Updated: May 19, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Co-occurrence of phenylphenalenones and flavonoids in Xiphidium caeruleum Aubl. flowers
Jingjing Fang1, Dirk Hölscher, Bernd Schneider
1Max Planck Institute for Chemical Ecology, Beutenberg Campus, Hans-Knöll Strasse 8, Jena, Germany.
Abstract:
A Xiphidium caeruleum flower extract was separated by semi-preparative HPLC into five fractions, from which three flavonoids, two phenylphenalenones and 17 phenylphenalenone-related compounds including five unknown compounds, were isolated and their structures elucidated by Liquid Chromatography-Diode Array Detection-Solid Phase Extraction-Nuclear Magnetic Resonance spectroscopy (LC-DAD-SPE-NMR) and mass spectrometry (MS). This is the first report of the co-occurrence of phenylphenalenones and flavonoids in the Haemodoraceae family. The ecological implications of flavonoids and various phenylphenalenone-type compounds and their putative biosynthesis sites in X. caeruleum are subject to discussion.
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