Preparative isolation of a novel flavonoid from an infusion of Byrsonima basiloba leaves by high-speed counter-current chromatography
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Data
2007-01-01
Autores
Sannomiya, Miriam
Figueiredo, Maria E.
da Silva, Marcelo A.
Rodrigues, Clenilson M.
Santos, Lourdes Campaner dos [UNESP]
Souza-Brito, Alba R. M.
Vilegas, Wagner [UNESP]
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Editor
Natural Products Inc
Resumo
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-alpha-L-rhamnopyranosyl-(1 -> 3)-O-[alpha-L-rhamnopyranosyl-(1 -> 6)]-beta-D-allopyranoside, and two known compounds quercetin3-O-(X-L-rhamnopyranosyl-(1 -> 6)-beta-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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Palavras-chave
counter-current chromatography, Byrsonima basiloba, gradient elution, flavonoids, (+)-catechin
Como citar
Natural Product Communications. Westerville: Natural Products Inc., v. 2, n. 8, p. 829-834, 2007.