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Phenolic Compounds from the Fresh Leaves of Eucalyptus maideni
Authors:Li‐Wen Tian  Chong‐Ren Yang  Ying‐Jun Zhang
Abstract:Four new phenolic compounds, 7‐O‐methylcatechin 5‐Oβ‐D ‐glucopyranoside ( 1 ), 6‐O‐feruloyl‐D ‐glucopyranose ( 2 ), demethylpiperitol 4‐Oβ‐D ‐glucopyranoside ( 3 ), and 2‐episesaminol 2‐Oβ‐D ‐glucopyranoside ( 4 ) were isolated from the fresh leaves of Eucalyptus maideni, together with six hydrolyzable tannins, 5 – 10 , a flavonol glycoside, 11 , three simple phenolics, 12 – 14 , a monoterpene glucoside, 15 , and a rosenoside, 16 . Their structures were determined on the basis of detailed spectroscopic analysis, acidic hydrolysis, and enzymatic hydrolysis. The known compounds 10 and 13 were obtained from the genus Eucalyptus for the first time.
Keywords:Eucalyptus maideni  Methylcatechin glycosides  Glycosides  Lignan glycosides
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