Abstract: Fractionation of an ethanolic extract of the leaves of Phenax angustifolius has resulted in the isolation of two new lignans, 2-hydroxy-2-(3‘,4‘-dihydroxyphenyl)methyl-3-(3‘ ‘,4‘ ‘-dimethoxyphenyl)methyl-γ-butyrolactone (1) and 2-hydroxy-2-(4‘-O-β-d-glucopyranosyl-3‘-hydroxyphenyl)methyl-3-(3‘ ‘,4‘ ‘-dimethoxyphenyl)methyl-γ-butyrolactone (2), and three known compounds, vitexin, isovitexin, and quercetin 3-O-α-l-rhamnopyranoside. The structures of 1 and 2 were determined using spectroscopic methods.
Phenolic Constituents of Phenax angustifolius
RASTRELLI, Luca;DE SIMONE, Francesco;AQUINO, Rita Patrizia
2001-01-01
Abstract
Abstract: Fractionation of an ethanolic extract of the leaves of Phenax angustifolius has resulted in the isolation of two new lignans, 2-hydroxy-2-(3‘,4‘-dihydroxyphenyl)methyl-3-(3‘ ‘,4‘ ‘-dimethoxyphenyl)methyl-γ-butyrolactone (1) and 2-hydroxy-2-(4‘-O-β-d-glucopyranosyl-3‘-hydroxyphenyl)methyl-3-(3‘ ‘,4‘ ‘-dimethoxyphenyl)methyl-γ-butyrolactone (2), and three known compounds, vitexin, isovitexin, and quercetin 3-O-α-l-rhamnopyranoside. The structures of 1 and 2 were determined using spectroscopic methods.File in questo prodotto:
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