High-speed countercurrent chromatography as a valuable tool to isolate C-glycosylflavones from Cecropia lyratiloba Miquel.
A new apigeninglycoside, apigenin 6-C-galactosyl-6"-O-beta-galactopyranoside (1), isoorientin, and a mixture of orientin and isovitexin were isolated from leaves of Cecropia lyratiloba by high-speed countercurrent chromatography using a solvent system containing ethyl acetate, butanol, methanol and water. The structural elucidation of 1 was based on NMR spectroscopy.
Oliveira
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RR
Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. emfibra@uol.com.br
Moraes
M C C
MC
Castilho
R O
RO
Valente
A P
AP
Carauta
J P P
JP
Lopes
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D
Kaplan
M A C
MA
D047310:Apigenin; D035702:Cecropia Plant / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D003377:Countercurrent Distribution / Q000379:methods*; D005419:Flavonoids / Q000302:isolation & purification*; D005960:Glucosides / Q000302:isolation & purification*; D047311:Luteolin; D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry
D005419:Flavonoids; D005960:Glucosides; D047310:Apigenin; C057912:homoorientin; C065886:orientin; C049772:isovitexin; D047311:Luteolin