Publicação: Preparative droplet counter-current chromatography for the separation of the new nor-seco-triterpene and pentacyclic triterpenoids from Qualea parviflora
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Coorientador
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Editor
Vieweg
Tipo
Artigo
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Acesso restrito
Resumo
The methanolic extract of the bark of the medicinal plant Qualea parviflora (Vochysiaceae) contains new nor-seco-triterpene and pentacyclic triterpenoids. They were separated in a preparative scale using droplet counter-current chromatography. The optimum solvent used was composed of a mixture of CHCl3/MeOH/H2O (43:37:20, v/v) in the descending mode and led to a successful separation of the new compound 28-nor-17, 22-seco-2 alpha, 3 beta, 19, 22, 23-pentahydroxy-Delta(12)-olecinane, besides the known triterpenoids bellericagenin B, bellericaside B and arjunglucoside I. Identification was performed by ESI-MS, H-1 NMR and C-13 NMR analyses.
Descrição
Palavras-chave
thin layer chromatography, droplet counter-current chromatography, nor-seco-triterpene and pentacyclic triterpenoids, Qualea parviflora bark
Idioma
Inglês
Como citar
Chromatographia. Wiesbaden: Vieweg, v. 64, n. 11-12, p. 695-699, 2006.
