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Planta Med 1997; 63(3): 284-285
DOI: 10.1055/s-2006-957679
DOI: 10.1055/s-2006-957679
Letters
© Georg Thieme Verlag Stuttgart · New York
Revised Structures of Four Saponins from Nauclea diderrichii
Weitere Informationen
Publikationsverlauf
1996
1996
Publikationsdatum:
04. Januar 2007 (online)
![](https://www.thieme-connect.de/media/plantamedica/199703/lookinside/thumbnails/10.1055-s-2006-957679-1.jpg)
Abstract
The interglycosidic linkages of four quinovic acid glycosides previously described from the bark of Nauclea diderrichii (de Wild) Merr. (Rubiaceae) are revised on the basis of 2D-NMR spectroscopic results. The structures were established as: quinovic acid 3-O-β-glucopyranosyl(1→4)-β-fucopyranosyl-(28→1)-β -glucopyranosyl ester, quinovic acid 3-O-β-glucopyranosyl-(1→4)-α-rhamnopyranosyl-(28→1)-β-glucopyranosyl ester, quinovic acid 3-O-β-glucopyrnaosyl-(1→4,)-β-fucopyranoside, and quinovic acid 3-O-β-glucopyranosyl-(1→4)-α-rhamnopyranoside. The first three saponins are new compounds.