Five naphthalene glycosides from the roots of Rumex patientia |
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Authors: | Demirezer O Kuruüzüm A Bergere I Schiewe H J Zeeck A |
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Institution: | Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey. omurd@hacettepe.edu.tr |
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Abstract: | Three novel and two known naphthalene glycosides were isolated from the roots of Rumex patientia L. (Polygonaceae). The structures of the new compounds were established, respectively as 2-acetyl-3-methyl-6-carboxy-1,8-dihydroxynaphthalene-8-O-beta-D-glucopyranoside, 4,4"-binaphthalene-8,8"-O,O-di-beta-D-glucopyranoside and 2-acetyl-3-methyl-1,8-dihydroxynaphthalene-8-O-beta-D-glucopyranosyl (1-->3) beta-D-glucopyranoside on the basis of spectral analysis. The other napthalene glycosides were determined as nepodin-8-O-beta-D-glucopyranoside and torachrysone-8-O-beta-D-glucopyranoside by comparison of their spectral data with those previously reported. |
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