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Triterpene Glycosides of Astragalus and Their Genins. LXVIII. Cycloorbigenin C, a New Cycloartane Genin

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Abstract

The new triterpenoid cycloartane cycloorbigenin C, the structure of which is 23ξ,24ξ-cycloartan-3β,6α,16β,23,24,25-hexaol, was obtained from the aerial part of Astragalus orbiculatus Ledeb. (Leguminosae). The structure of cycloorbigenin C was proved using chemical transformations, IR spectroscopy, electron-impact mass spectrometry, and PMR and 13C NMR spectra interpreted using J-modulation and the 2D NMR spectroscopies: 1H-1H COSY, TOCSY, ROESY, HSQC, and HMBC.

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Authors and Affiliations

  1. Academy of Sciences of the Republic of Uzbekistan, S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Tashkent

    R. P. Mamedova & M. A. Agzamova

  2. Academy of Sciences of the Republic of Uzbekistan, S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Tashkent

    M. I. Isaev

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  1. R. P. Mamedova
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  2. M. A. Agzamova
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  3. M. I. Isaev
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Mamedova, R.P., Agzamova, M.A. & Isaev, M.I. Triterpene Glycosides of Astragalus and Their Genins. LXVIII. Cycloorbigenin C, a New Cycloartane Genin. Chemistry of Natural Compounds 39, 470–474 (2003). https://doi.org/10.1023/B:CONC.0000011122.41260.98

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  • DOI: https://doi.org/10.1023/B:CONC.0000011122.41260.98

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