2.

New Secondary Metabolites from Quercus coccifera L.

Didem Şöhretoğlu, Ayşe Kuruüzüm-Uz, András Simon, Tamás Patócs and Miklós Dékány

Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, 06100 Ankara, Turkey

Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, H-1111, Budapest, Hungary

Gedeon Richter Plc., Spectroscopic Research, Budapest 10. P.O.Box 27, H-1475, Hungary

Abstract: Three new secondary metabolites kermesoside (1), cocciferoside (2) and (-)-8-chlorocatechin (3), were isolated from the the stems with barks of Quercus coccifera along with five known phenolic compounds, 3-hydroxy-1-(4-hydroxy-3-methoxyphenyl)-propan-1-one (4) and 3-hydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-propan-1-one (5), trans-resveratrol-3-O-β-glucopyranoside (6) lyoniresinol-9-O-β-xylopyranoside (7), lyoniresinol-9-O-β-glucopyranoside (8). The structure elucidation of the isolated compounds was performed by spectroscopic methods (UV, 1D- and 2D- NMR and HR-MS).

Keywords: Quercus coccifera ; megastigmane glycoside; phenolic compounds; spectroscopic analysis. © 2014 ACG Publications. All rights reserved.