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Isolation and on-line LC/CD analysis of 3,8 ''-linked biflavonoids from Gnidia involucrata

Terreaux, C.
Kurtan, T.
Szikszai-Kiss, A.
Antus, S.
Msonthi, J.D.
Published in Helvetica Chimica Acta. 2003, vol. 86, p. 2768-2778
Abstract 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 billavanoids GB-1 and GB-2, and the configurational assignment of GB-3.
Keywords absolute-configurationguttiferaeflavanonesglycosides plants
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