Dammarane saponins from Zizyphus lotus

被引:47
作者
Renault, JH
Ghedira, K
Thepenier, P
Lavaud, C
ZechesHanrot, M
LeMenOlivier, L
机构
[1] FAC PHARM REIMS,CNRS,URA 492,F-51096 REIMS,FRANCE
[2] FAC MONASTIR,MONASTIR 5000,TUNISIA
关键词
Zizyphus lotus; Rhamnaceae; root bark; dammarane saponins; jujubosides A and C; lotosides I and II;
D O I
10.1016/S0031-9422(96)00721-2
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
Four dammarane-type saponins were isolated by means of centrifugal partition chromatography from the root bark of Zizyphus lotus. Their structures were elucidated using a combination of 1D and 2D H-1 and C-13 NMR spectra and mass spectroscopy. One of these glycosides is the known jujuboside A. The others are three new dammarane saponins, identified as 3-O-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranosyl (1-->3)-[alpha-L-rhamnopyranosyl(1-->2)]-alpha-L- arabinopyranosyl jujubogenin = jujuboside C, 3-O-alpha-L-rhamnopyranosyl(1-->2)-[beta-D-glucopyranosyl (1-->3)]-beta-D-galactopyranosyl lotogenin - lotoside I, and 3-O-alpha-L-rhamnopyranosyl(1-->2)-[beta-glucopyranosyl (1-->3)]-beta-D-glucopyranosyl lotogenin - lotoside II. Lotogenin is a new dammarane derivative identified as (15R, 16R, 20R,22R)-16 beta,22-epoxydammar-24-ene-3 beta,15 alpha, 16 alpha,20 beta-tetraol. Copyright (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:1321 / 1327
页数:7
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