Triterpene glycosides from Agrostemma gracilis
Articles > Article · 2010
Authors: Omer Koz, ERDAL BEDİR, Milena Masullo, Özgen ALANKUŞ, Sonia Piacente
Phytochemistry, Journal Indexed in SCI Expanded, International, WoS, 2010, vol 71, pp 663-668
DOI: 10.1016/j.phytochem.2009.12.001
Summary
Four triterpene saponins, agrostemmosides A-D were isolated from the methanol extract of Agrostemma gracilis. The structures of the compounds were determined as 3-O-beta-D-xylopyranosyloleanolic acid 28-O-beta-D-glucopyranosyl-(1 -> 2)-[beta-D-xylopyranosyl-(1 -> 6)]-beta-D-glucopyranosyl-(1 -> 6)-beta-D-glucopyranosyl ester, 3-O-alpha-L-rhamnopyranosyl-(1 -> 2)-beta-D-xylopyranosyloleanolic acid 28-O-beta-D-glucopyranosyl-(1 -> 2)-[beta-D-xylopyranosyl-(1 -> 6)]-beta-D-glucopyranosyl-(1 -> 6)-beta-D-glucopyranosyl ester, 3-O-beta-D-xylopyranosylechinocystic acid 28-O-beta-D-glucopyranosyl-(1 -> 2)-beta-D-glucopyranosyl-(1 -> 6)-beta-D-glucopyranosyl ester, 3-O-beta-D-xylopyranosylechinocystic acid 28-O-beta-D-glucopyranosyl-(1 -> 2)-[beta-D-xylopyranosyl-(1 -> 6)]-beta-D-glucopyranosyl-(1 -> 6)-beta-D-glucopyranosyl ester by a combination of one- and two-dimensional NMR techniques, and mass spectrometry. To the best of our knowledge this is the first phytochemical report on A. gracilis, and echinocystic acid saponins were encountered for the first time in Caryophyllaceae family. (C) 2009 Elsevier Ltd. All rights reserved.