Oleanane saponins from Gymnema sylvestre

被引：58
|
作者：
Ye, WC
Zhang, QW
Liu, X
Che, CT [1 ]
Zhao, SX
机构：
[1] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
[2] China Pharmaceut Univ, Dept Phytochem, Nanjing 210009, Peoples R China
[3] Chinese Univ Hong Kong, Sch Chinese Med, Shatin, Hong Kong, Peoples R China
来源：
PHYTOCHEMISTRY | 2000年 / 53卷 / 08期
关键词：
Gymnema sylvestre; Asclepiadaceae; oleanane saponins;
D O I：
10.1016/S0031-9422(99)00483-5
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Six oleanane-type saponins, along with two known triterpene saponins, were isolated from the leaves of Gymnema sylvestre. The structures of the oleanane triterpene glycosides were characterized as longispinogenin 3-O-beta-D-glucuronopyranoside, 21 beta-benzoylsitakisogenin 3-O-beta-D-glucuronopylanosyl, 3-O-beta-D-glucopyanosyl(1-->6)-beta-D-glucopyranosyl oleanolic acid 28-O-beta-D-glucopy ranosyl ester, oleanolic acid 3-O-beta-D-xylopyranosyl(1-->6)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside, 3-O-beta-D-xylopyranosyl(1-->6)-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranosyl oleanolic acid 18-O-beta-D-glucopyranosyl ester and 3-O-beta-D-glucopymnosyl(1-->6)-beta-D-glucopyranosyl oleonolic acid 28-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranosyl ester on the basis of hydrolysis and spectral evidence, including 1D- and 2D-NMR (TOCSY, ROESY, HMQC and HMBC) and FABMS analyses. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：893 / 899
页数：7
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