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      Two New Sulfated Furostanol Saponins from Tribulus terrestris

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          Abstract

          The known furostanol saponins methylprotodioscin and protodioscin and two new sulfated saponins, sodium salt of 26-O-β-glucopyranosyl-22α-methoxy-(25R)-furost-5-ene-3β,26-diol- 3-O-α-rhamnopyranosyl-(1→2)-β-4-O-sulfo-glucopyranoside (methylprototribestin) and sodium salt of 26-O-β-glucopyranosyl-22α-hydroxy-(25R)-furost-5-ene-3β,26-diol-3-O-α-rhamnopyranosyl-( 1→2)-β-4-O-sulfo-glucopyranoside (prototribestin) have been isolated from the aerial parts of Tribulus terrestris L. growing in Bulgaria. The structures of the new compounds were elucidated on the basis of 1D and 2D (DQF-COSY, TOCSY, HSQC-TOCSY, HSQC, HMBC, ROESY) NMR data, ESI mass spectra and chemical transformation.

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          Author and article information

          Journal
          Zeitschrift für Naturforschung C
          Walter de Gruyter GmbH
          1865-7125
          0939-5075
          February 1 2002
          February 1 2002
          : 57
          : 1-2
          : 33-38
          Affiliations
          [1 ]1Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
          [2 ]2Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
          Article
          10.1515/znc-2002-1-206
          © 2002

          http://creativecommons.org/licenses/by-nc-nd/3.0/

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