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Abstract
Analysis of the butanol-soluble fraction from the methanolic extract of the aerial parts of Phagnalon rupestre (Asteraceae) has led to the isolation of seven phenolic compounds. Three have been identified on the basis of their NMR spectra as new natural compounds: the lignan 7,7′-bis-(4-hydroxy-3,5-dimethoxyphenyl)-8,8′-dihydroxymethyl-tetrahydrofuran-4- O-β-glucopyranoside ( 1), the prenylhydroquinone glycoside 1- O-β-glucopyranosyl-1,4-dihydroxy-2-(3′-hydroxy-3′-methylbutyl) benzene ( 2) and the acetophenone glycoside 12- O-β-glucopyranosyl-9β,12-dihydroxytremetone ( 3). The known flavonoids apigenin-7- O-β-glucoside, luteolin-7- O-β-glucoside, luteolin-7- O-β-glucuronide and the acetophenone picein were also isolated.
Published Version
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