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Isolation and On‐Line LC/CD Analysis of 3,8″‐Linked Biflavonoids from Gnidia involucrata
Author(s) -
Ferrari Julien,
Terreaux Christian,
Kurtán Tibor,
SzikszaiKiss Attila,
Antus Sándor,
Msonthi Jerome D.,
Hostettmann Kurt
Publication year - 2003
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.200390226
Subject(s) - biflavonoids , chemistry , thymelaeaceae , diastereomer , absolute configuration , stereochemistry , isolation (microbiology) , methanol , organic chemistry , botany , microbiology and biotechnology , biology
Investigation of the methanol extract of the roots of Gnidia involucrata (Thymelaeaceae) led to the isolation and characterization of two new 3,8″‐biflavonoid diastereoisomers, named GB‐4 ( 6a ) and GB‐4a ( 6b ). Their absolute configurations were determined in mixture by on‐line LC/CD measurements, which also allowed the revision of absolute configurations of the biflavanoids GB‐1 and GB‐2, and the configurational assignment of GB‐3.