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Updated: Jun 16, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
Published on: August 14, 2019
Characterization of flavonoid and naphthopyranone derivatives from Eriocaulon ligulatum using liquid chromatography
Lourdes Campaner dos Santos1, Marcelo Aparecido da Silva, Clenilson Martins Rodrigues
1São Paulo State University-UNESP, Institute of Chemistry, Organic Chemistry Department, CP 355, CEP 14800-900, Araraquara, SP, Brazil. loursant@iq.unesp.br
Abstract:
Liquid chromatography-electrospray ionization multistage ion trap mass spectrometry (LC-ESI-IT-MS(n)) was used to analyze the secondary metabolites in the methanol extract of the capitulae of Eriocaulon ligulatum. The major components were mono- and diglycosides of flavonoids and naphthopyranones. Eleven compounds, including four new flavonol glycosides, were identified based on their fragmentation patterns in MS experiments and on NMR analysis of the isolated compounds. The described data may contribute to a better understanding of the taxonomic classification of the Eriocaulaceae family.
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