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Citation: Viviane Nadège Nenkep, Jovita Chi Shirri, Hanh Trinh Van-Dufat, Falindor Sipepnou, Philippe Vérité, Elisabeth Seguin, François Tillequin, Jean Wandji. New flavan and unusual chalcone glycosides from Drypetes parvifolia[J]. Chinese Chemical Letters, ;2008, 19(8): 943-946. doi: 10.1016/j.cclet.2008.04.048 shu

New flavan and unusual chalcone glycosides from Drypetes parvifolia

a Department of Organic Chemistry, University of Yaounde-1, Faculty of Science, P.O.Box 812, Yaounde, Cameroon;
b Laboratoire de Pharmacognosie de l'Université Paris Descartes, UMR/CNRS N 8638, Faculté des Sciences Biologiques et Pharmaceutiques, 4-Avenue de l'Observatoire, 75006 Paris, France;
c Laboratoire de Pharmacognosie, UFR de Médecine Pharmacie Rouen, 22-Bld Gambetta, 76183 Rouen Cedex 1, France;
d Laboratoire de Chimie Analytique, UFR de Médecine Pharmacie Rouen, 22-Bld Gambetta, 76183 Rouen Cedex 1, France

Received Date: 9 March 2008

Fund Project: France" during his multiple research visits in ParisOne of the authors (J.Wandji) is grateful for grant (No.F/2624-3F) from the International Foundation for Science (Sweden) and for the sponsorship of the "Université Paris Descartes

Two new compounds 7-hydroxy-5-O-(b-D-glucopyranoside) flavan (1) and (Z)-4',6'-dihydroxy-2'-O-(b-D-glucopyranoside) chalcone (2), along with eight known compounds, were isolated from the stem bark of Drypetes parvifolia (Euphorbiaceae).Their structures were established on the basis of spectroscopic analysis and chemical evidence
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