Cycloartane-type glycosides from the roots of Astragalus caspicus Bieb.

被引：25
|
作者：
Fathiazad, F. [1 ]
Khosropanah, M. K. [2 ]
Movafeghi, A. [2 ]
机构：
[1] Tabriz Univ Med Sci, Dept Pharmacognosy, Fac Pharm, Tabriz, Iran
[2] Univ Tabriz, Dept Plant Biol, Fac Nat Sci, Tabriz, Iran
来源：
NATURAL PRODUCT RESEARCH | 2010年 / 24卷 / 11期
关键词：
Astragalus caspicus; Fabaceae; cycloartane-type glycoside; saponin; TRITERPENE GLYCOSIDES; AERIAL PARTS; IV; DIVERSIFICATION; RATES;
D O I：
10.1080/14786410902975582
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Two new cycloartane-type glycosides, caspicuside I and caspicuside II, were isolated along with two known saponins, cycloastragenol and astragaloside IV, from the roots of Astragalus caspicus. As the aglycon group, caspicuside I possesses 3,6,16,(24S),25-pentahydroxycycloartane (cyclocanthagenol), while caspicuside II owns (20R, 24S)-epoxy-3, 6,16, 25-tetrahydroxycycloartane (cycloastragenol). The chemical structures of these new cycloartane-type glycosides were established as 3-O--L-rhamnopyranosyl-16-O--D-xylopyranosyl-cyclocanthogenol and 3-O-[-D-xylopyranosyl(1 3)--D-glucopyranosyl]-6-O--xylopyranosyl-cycloastragenol, respectively. These findings add to a growing body of literature demonstrating the high variation of cycloartane-type triterpene glycosides in different species of Astragalus.
引用
收藏
页码：1069 / 1078
页数：10
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