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Phenolic Compounds from the Fresh Leaves of Eucalyptus maideni
Author(s) -
Tian LiWen,
Yang ChongRen,
Zhang YingJun
Publication year - 2010
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201000067
Subject(s) - chemistry , eucalyptus , hydrolysis , glycoside , glucoside , monoterpene , hydrolyzable tannin , phenols , organic chemistry , botany , polyphenol , antioxidant , medicine , alternative medicine , pathology , biology
Four new phenolic compounds, 7‐ O ‐methylcatechin 5‐ O ‐ β ‐ D ‐glucopyranoside ( 1 ), 6‐ O ‐feruloyl‐ D ‐glucopyranose ( 2 ), demethylpiperitol 4 ‐O ‐ β ‐ D ‐glucopyranoside ( 3 ), and 2‐episesaminol 2‐ O ‐ β ‐ 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.