Triterpene Glycosides of Tragacantha Stipulosa and Their Genins. Structures of Askendosides G and D and Cycloglobiceposide B from One- and Two-Dimensional 1H and 13C NMR Spectroscopy |
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| Authors: | R Zh Karimov V V Kachala N Sh Ramazanov Z Saatov A S Shashkov |
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| Institution: | (1) S. Yu. Yunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, 700170 Tashkent;(2) N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow, B-334, Leninskii pr., 47 |
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| Abstract: | Roots of Tragacantha stipulosa Boriss yielded three triterpene glycosides of the cycloartane series: askendoside G (1), askendoside D (2), and cycloglobiceposide B (3). Glycoside 1 is 3-O- -L-arabinopyranosyl-(1 2)- -D-xylopyranoside; 16-O--D-glucopyranoside-24R-cycloartan-3,6,16,24,25-pentaol; 2 - 3-O--L-arabinopyranosyl-(12)--D-xylopyranoside; 6-O--D-xylopyranoside-20R,24S-epoxycycloartan-3,6,16,25-tetraol; 3 - 3-O--D-xylopyranoside; 16-O--D-glucopyranoside; 25-O--D-glucopyranoside-24R-cycloartan-3,6,16,24,25-pentaol. |
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| Keywords: | cycloartanes triterpene glycosides two-dimensional NMR spectroscopy (1H 13C COSY TOCSY ROESY HSQC and HMBC) |
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