Four new steroid glycosides from the Vietnamese starfish Linckia laevigata

被引：0
|
作者：
A. A. Kicha
N. V. Ivanchina
A. I. Kalinovsky
P. S. Dmitrenok
E. V. Sokolova
I. G. Agafonova
J. Morre
V. A. Stonik
机构：
[1] Pacific Institute of Bioorganic Chemistry of the Far Eastern Branch of the Russian Academy of Sciences,Department of Chemistry and Environmental Health Sciences Center
[2] Oregon State University,undefined
来源：
Russian Chemical Bulletin | 2007年 / 56卷
关键词：
starfish; Linckia laevigata; polyhydroxylated steroid; steroid glycoside; NMR spectra;
D O I：
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中图分类号：
学科分类号：
摘要：
Eighteen steroid compounds, including four new steroid glycosides, viz., linckosides L3–L6, along with the previously known nine glycosides and five free polyhydroxysteroids, were isolated from the starfish Linckia laevigata collected on the Vietnamese coast. New compounds contain the 2-O-methyl-β-D-xylopyranosyl unit at the C(3) atom of polyhydroxylated steroidal aglycone. Two of these compounds are monosides, and the other two belong to biosides and have an additional β-D-xylopyranosyl residue at C(26) in the side chain of the aglycone. The structures of the new compounds were determined by NMR spectroscopy, mainly by 2D NMR, and mass spectrometry.
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页码：823 / 830
页数：7
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