SAPONINS FROM AERIAL PARTS OF ALFALFA (MEDICAGO-SATIVA)

被引：39
|
作者：
MASSIOT, G [1 ]
LAVAUD, C [1 ]
BESSON, V [1 ]
LEMENOLIVIER, L [1 ]
VANBINST, G [1 ]
机构：
[1] VRIJE UNIV BRUSSELS, FAK WETENSCHAPPEN, B-1050 BRUSSELS, BELGIUM
来源：
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1991年 / 39卷 / 01期
关键词：
D O I：
10.1021/jf00001a014
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
The structures of three saponins from the leaves of alfalfa, cultivar Resis, were established as 28-O-[beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl]medicagenate, 28-O-[beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl]-3-O-beta-D-glucopyranosyl-medicagenate, and 28-O-[beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl]-3-O-[beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl]medicagenate; in the North American cultivar Lahontan, two saponins were isolated and their structures determined as 28-O-[beta-D-xylopyranosyl-(1-->4)-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl]-3-O-beta-D-glucuronopyranosylmedicagenate and 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl-(1-->2)-beta-D-glucuronopyranosyl]soyasapogenol B. Structural elucidations were performed on peracetylated derivatives of the saponins by using H-1 and C-13 NMR with techniques such as COSY, relayed COSY, HOHAHA, ROESY, HMBC, and HMQC.
引用
收藏
页码：78 / 82
页数：5
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