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Fast preparative separation of flavones from capitula of Eriocaulon ligulatum (Vell.) L.B.Smith (Eriocaulaceae) by High-speed countercurrent chromatography (HSCCC)

Authors: Santos, Lourdes Campaner dos; Silva, M. A.; Rodrigues, C. M.; Rodrigues, J.; Rinaldo, D.; Sannomiya, M.; Vilegas, Wagner;

Fast preparative separation of flavones from capitula of Eriocaulon ligulatum (Vell.) L.B.Smith (Eriocaulaceae) by High-speed countercurrent chromatography (HSCCC)

Abstract

High-speed countercurrent chromatography (HSCCC) is a leading method for the fast separation of natural products from plants. It was used for the preparative isolation of two flavone monoglucosides present in the capitula of Eriocaulon ligulatum (Vell.) L.B.Smith (Eriocaulaceae). This species, known locally as ″botãodourado″, is exported to Europe, Japan and North America as an ornamental species, constituting an important source of income for the local population of Minas Gerais State, Brazil. The solvent system, optimized in tests prior to the HSCCC run, consisted of the two phases of the mixture ethyl acetate: n-propanol: water (140:8:80, v/v/v), which led to the successful separation of 6-methoxyluteolin-7-O-β-D-allopyranoside and 6-methoxyapigenin-7-O-β-D-allopyranoside in only 3 hours. The two flavonoids were identified by NMR (1- D and 2-D) and ESI-MS, comparing their spectra with published data.

Country
Brazil
Keywords

flavanoid, hsccc, eriocaulaceae, flavone, e. ligulatum, E. ligulatum, HSCCC, water, 6 methoxyluteolin 7 o beta dextro allopyranoside, propanol, 540, electrospray mass spectrometry, unclassified drug, 6 methoxyapigenin 7 o beta dextro allopyranoside, RS1-441, nuclear magnetic resonance, Pharmacy and materia medica, counter current chromatography, Eriocaulaceae, chemical structure, HD9665-9675, Flavone, acetic acid ethyl ester, Pharmaceutical industry

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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