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Two New Iridoid Glycosides from Hedyotis tenelliflora B lume
Author(s) -
Zhao JingFeng,
Yuan QinMei,
Yang XiaoDong,
Zhang HongBing,
Li Liang
Publication year - 2005
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.200590190
Subject(s) - chemistry , glycoside , stereochemistry , iridoid , pyran , hydrolysis , acid hydrolysis , organic chemistry
Two new iridoid glycosides, teneoside A (=(2a R ,5 S )‐5‐[( β ‐ D ‐glucopyranosyl)oxy]‐2a,4a,5,7b‐tetrahydro‐4‐{[( α ‐ L ‐rhamnopyranosyl)oxy]methyl}‐1 H ‐2,6‐dioxacyclopenta[ cd ]inden‐1‐one; 1 ) and teneoside B (=methyl (1 S ,5 R )‐1‐[( β ‐ D ‐glucopyranosyl)oxy]‐1,4a,5,7a‐tetrahydro‐5‐hydroxy‐7‐{[( α ‐ L ‐rhamnopyranosyl)oxy]methyl}cyclopenta[ c ]pyran‐4‐carboxylate; 2 ), were isolated from the roots of Hedyotis tenelliflora B lume , along with two known compounds, deacetylasperuloside ( 3 ) and scandoside methyl ester ( 4 ). Their structures were elucidated by chemical methods (acid hydrolysis) and spectroscopic analyses.