糖苷键
糖苷
化学
旋花
乙醚
有机化学
立体化学
植物
生物
酶
杂草
作者
Naoki Noda,Hirokuni Kogetsu,Takahiro Kawasaki,Kazumoto Miyahara
出处
期刊:Phytochemistry
[Elsevier]
日期:1992-08-01
卷期号:31 (8): 2761-2766
被引量:19
标识
DOI:10.1016/0031-9422(92)83626-a
摘要
Two minor ether-soluble resin glycosides, scammonins VII and VIII, were isolated from Radix Scammoniae, the roots of Convolvulus scammonia. In addition to (2S)-2-methylbutyric acid and tiglic acid, they are composed, respectively, of orizabic acid A and a new glycosidic acid named scammonic acid B, with similar macrocyclic ester structures to those of the scammonic acid A-based scammonins I-VI. Isolation of genuine scammonins III-V, which were previously obtained as peracetates, is also described.
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