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Isoprenylated Flavonoids from the Roots and Rhizomes of Sophora tonkinensis
Author(s) -
Ding Peilan,
Chen Daofeng
Publication year - 2006
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.200690000
Subject(s) - chemistry , rhizome , chalcone , stereochemistry , pyran , ring (chemistry) , flavanone , two dimensional nuclear magnetic resonance spectroscopy , flavonoid , traditional medicine , organic chemistry , antioxidant , medicine
Two new flavanones, tonkinochromanes A ( 1 ) and B ( 2 ), and a new chalcone, tonkinochromane C ( 3 ), were isolated from the roots and rhizomes of Sophora tonkinensis. Their structures were elucidated by spectroscopic methods including 2D‐NMR and MS experiments. Of the three isoprenyl substituents in these compounds on rings A and B , one to two were found to be ring‐fused in the form of either dihydro‐ or regular 2,2‐dimethyl‐2 H ‐pyran moieties.