Bioactive Cycloartane-Type Triterpene Glycosides from Astragalus elongatus

Calis, Ihsan and Barbic, Matej and Juergenliemk, Guido (2008) Bioactive Cycloartane-Type Triterpene Glycosides from Astragalus elongatus. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION C-A JOURNAL OF BIOSCIENCES, 63 (11-12). pp. 813-820. ISSN 0939-5075, 1865-7125

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Abstract

Together with two known cycloartane-type glycosides, askendosides D(3-O-[alpha-arabino-pyranosyl-(1 -> 2)-beta-xylopyranosyl]-6-O-beta-xylopyranosyl-cycloastragenol, 2) and G (3-O-[alpha-arabinopyranosyl-(1 -> 2)-beta-xylopyranosyl]-16-0-beta-glucopyranosyl-3 beta,6 alpha,16 beta,24(R),25-pentahydroxycycloartane, 3), also a new monodesmosidic cycloartane-type glycoside, elongatoside (1), was isolated from the roots of Astragalits elongatus and identified as 3-O-[alpha-arabinopyranosyl-(1 -> 2)-beta-xylopyranosy]-cycloastragenol. All structures were unambiguously determined by means of spectroscopic and spectrometric methods (1D and 2D NMR, ESI-MS). The isolated compounds were tested for the inhibition of proliferation and ICAM-1 expression in vitro using the human microvascular endothelial cell line (HMEC-1). 1 showed weak activity in the ICAM-1 assay.

Item Type: Article
Uncontrolled Keywords: LYMPHOCYTE-PROLIFERATION; GENINS; MODULATORS; SAPONINS; CELLS; Astragalus elongatus; Cycloartane-Type Glycosides; Endothelium
Subjects: 600 Technology > 615 Pharmacy
Divisions: Chemistry and Pharmacy > Institute of Pharmacy > Pharmaceutical Biology (Prof. Heilmann)
Depositing User: Dr. Gernot Deinzer
Date Deposited: 21 Oct 2020 09:37
Last Modified: 21 Oct 2020 09:37
URI: https://pred.uni-regensburg.de/id/eprint/30153

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