83864-73-7Relevant articles and documents
Synthesis of α-hederin, δ-hederin, and related triterpenoid saponins
Ple, Karen,Chwalek, Martin,Voutquenne-Nazabadioko, Laurence
, p. 1588 - 1603 (2007/10/03)
The synthesis of α-hederin (3-O-[α-L-rhamnopyranosyl-(1→2) -α-L-arabinopyranosyl]hederagenin, 1), δ-hederin (3-O-(α-L-arabinopyranosyl)hederagenin, 3), and three related triterpenoid saponins is described as part of a study of the structure-activity relationships between triterpenoid saponins and hemolytic activity. 4-Methoxybenzyl α-L-arabinopyranoside (11) was synthesized first and then used to prepare the different arabinose acceptors. Glycosylation between the acceptors and 2,3,4-tri-O-benzoyl-α-L-rhamnopyranosyl trichloroacetimidate (20) was performed in excellent yield to give the desired disaccharides. Coupling of the trichloroacetimidate derivatives of the disaccharides to allyl- or methyl-hederagenin gave the protected saponosides in high yields. The saponins and their corresponding methyl esters were then obtained in good to moderate yields after deprotection. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004.
On the Structure of Saponins from Astrantia major L. Part 38: On the Knowledge of the Constituents of Some Saniculoideae
Hiller, K.,Adler, Claudia,Galetzka, G.,Franke, P.,Gruendemann, E.,Hille, J.
, p. 343 - 345 (2007/10/02)
From fresh plant material of Astrantia major L. a complex of saponins was isolated and separated into its main components.The complex comtains mono- and bisdesmosides with triterpene acids as aglycon.The dominating part of glycosides at C-3 of the aglyca is the 3-O-α-L-rhamnopyranosyl-(1->2)-α-L-arabinopyranoside linked with hederagenin (α-hederin) or oleanolic acid (β-hederin) and bisdesmosidically as hederagenin-28-O-L-rhamnopyranosylester (hederasaponin C) and as hederagenin-28-O-D-glucopyranosyl-(1->6)-D-glucopyranosylester (diipsacosid B).Furthermore a gypsogenic acid-3-O-D-glucopyranosyl-(1->2)-glucopyranosid was identified.
Studies on the constituents of Clematis species. III. On the saponins of the root of Clematis chinensis Osbeck
Kizu,Tomimori
, p. 3555 - 3560 (2007/10/02)
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