Triterpene Glycosides and Their Genins from Astragalus. LXIX. Orbigenin, the First Lanostanoid from Astragalus Plants

Author: Mamedova R. P.   Agzamova M. A   Isaev M. I.  

Publisher: Springer Publishing Company

ISSN: 0009-3130

Source: Chemistry of Natural Compounds, Vol.39, Iss.5, 2003-09, pp. : 475-478

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Abstract

The new lanostane methylsteroid orbigenin, the structure of which is 23ξ,24ξ-lanost-9(11)-en-3β,7β,16β,19,23,24,25-heptaol, was isolated from Astragalus orbiculatus Ledeb. (Leguminosae). The structure of the new triterpenoid, the first lanostanoid from plants of the Astragalus genus, was determined using electron-impact mass spectrometry and PMR and 13C NMR spectroscopies interpreted using J-modulation, DEPT, and the 2D NMR methods: 1H-1H COSY, HSQC, and HMBC.

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