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Tetralones and Flavonoids from Pyrola calliantha
Author(s) -
Liu Lei,
Li AnLiang,
Zhao MingBo,
Tu PengFei
Publication year - 2007
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.200790242
Subject(s) - chemistry , formononetin , kaempferol , quercetin , stereochemistry , glycoside , tetralones , organic chemistry , biology , daidzein , genistein , antioxidant , endocrinology
Two new tetralones, pyrolones A ( 1 ) and B ( 2 ), and a new flavonol glycoside, 2″‐ O ‐(4‐hydroxybenzoyl)hyperin ( 3 ), were isolated from Pyrola calliantha (whole plant), together with six structurally related compounds, including 2″‐ O ‐galloylhyperin ( 4 ), hyperin ( 5 ), formononetin ( 6 ), quercetin 3‐ O ‐ α ‐ L ‐arabinopyranoside ( 7 ), quercetin 3‐ O ‐ α ‐ L ‐arabinofuranoside ( 8 ), and kaempferol 3‐ O ‐ β ‐ D ‐galactopyranoside ( 9 ). The structures and absolute configurations of the new compounds were elucidated on the basis of spectroscopic (UV, ORD, CD, NMR) and mass‐spectrometric (HR‐ESI‐MS) analyses.