Preparative isolation of a novel flavonoid from an infusion of Byrsonima basiloba leaves by high-speed counter-current chromatography
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2007-01-01
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A method for the isolation of three compounds from the infusion of leaves of Byrsonima basiloba A. Juss. by high-speed counter-current chromatography (HSCCC) was developed. This technique led to the separation of a novel compound, quercetin 3-O-α-L-rhamnopyranosyl-(1→3)-O-[α-L- rhamnopyranosyl-(1→6)]-β-D-allopyranoside, and two known compounds quercetin-3-O-α-L-rhamnopyranosyl-(1→6)-β-D-galactopyranoside and (+)-catechin in 4 h with purities of over 92%. The structures of the compounds were determined by one- and two-dimensional NMR spectroscopy and HPLC.
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Byrsonima basiloba, Counter-current chromatography, Flavonoids, Gradient elution
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Natural Product Communications, v. 2, n. 8, p. 829-834, 2007.