Triterpene glycosides ofHedera canariensis IV. Structures of glycosides L-F3, L-G0, and L-Gla from the leaves of Algerian ivy |
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Authors: | L A Yakovishin V I Grishkovets I N Shchipanova A S Shashkov V Ya Chirva |
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Institution: | (1) Simferopol' State University, ul. Yaltinskaya, 4, 333036 Simferopol';(2) N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, V-334, Leninskii Prospekt, 47, 117913 Moscow;(3) Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina, 4, 117977 Moscow |
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Abstract: | Three minor partially acetylated glycosides have been isolated from the leaves of Algerian ivy, Hedera canariensis Willd. (Araliaceae) — the previously known {3-O- -L-rhamnopyranosyl-(1 2)-O- -L-arabinopyranoside] 28-O- -L-rhamnopyranosyl-(1 4)-O-(6-acetyl- -D-glucopyranosyl)-(1 6)-O- -D-glucopyranoside}s of oleanolic acid and of hederagenin (ciwujianoside C4 and kizuta saponin K11) and the new 3-O- -L-rhamnopyranosyl-(1 2)- -O-L-arabinopyranoside] 28-O- -L-rhamnopyranosyl-(1 4)-O-(6-O-acetyl- -D-glucopyranosyl)-(1 6)-O- -D-glucopyranoside of echinocystic acid (glycoside L-G0). The structures of the glycosides isolated have been established on the basis of chemical transformations and1H and13C NMR spectroscopy.Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 81–86, January–February, 1999. |
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