Characterization of flavonoid and naphthopyranone derivatives from Eriocaulon ligulatum using liquid chromatography tandem mass spectrometry.
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.
dos Santos
Lourdes Campaner
LC
São Paulo State University-UNESP, Institute of Chemistry, Organic Chemistry Department, CP 355, CEP 14800-900, Araraquara, SP, Brazil. loursant@iq.unesp.br
da Silva
Marcelo Aparecido
MA
Rodrigues
Clenilson Martins
CM
Carbone
Virginia
V
Napolitano
Assunta
A
Bassarello
Carla
C
Mari
Angela
A
Piacente
Sonia
S
Pizza
Cosimo
C
Vilegas
Wagner
W
D002851:Chromatography, High Pressure Liquid; D002867:Chromones / Q000737:chemistry* / Q000302:isolation & purification; D039262:Eriocaulaceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D009281:Naphthalenes / Q000737:chemistry* / Q000302:isolation & purification; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet; D053719:Tandem Mass Spectrometry
D002867:Chromones; D005419:Flavonoids; D009281:Naphthalenes