Revised Structures of Four Saponins from Nauclea diderrichii

Maroufath Lamidi; Evelyne Ollivier; Robert Faure; Laurent Debrauwer; Lucienne Nze-Ekekang; Guy Balansard

doi:10.1055/s-2006-957679

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Planta Med 1997; 63(3): 284-285
DOI: 10.1055/s-2006-957679

Letters

Revised Structures of Four Saponins from Nauclea diderrichii

Maroufath Lamidi¹ ^- ⁴ , Evelyne Ollivier¹ , Robert Faure² , Laurent Debrauwer³ , Lucienne Nze-Ekekang⁴ , Guy Balansard¹>

¹Laboratoire de Pharmacognosie, Faculté de Pharmacie, 27 Boulevard Jean Moulin, 13385 Marseille Cedex 5, France
²URA 1411, Université d'Aix-Marseille III, Avenue Escadrille Normandie Niemen, F-13397 Marseille Cedex 3, France
³INRA Centre de Recherche de Toulouse, Laboratoire des Xénobiotiques, 180 Chemin du Tournefeuille, BP 3, F-31931 Toulouse, France
⁴IPHAMETRA (CENAREST), BP 842, Libreville, Gabon

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1996

1996

Publication Date:
04 January 2007 (online)

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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.