Journal
RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY
Volume 35, Issue 4, Pages 504-509Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S106816200904013X
Keywords
starfish; Hippasteria kurilensis; glycosides; polyhydroxysteroids; NMR spectra
Funding
- Russian Foundation for Basic Research [08-04-00599-a]
- [2813.2008.4]
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Two new steroid glycosides were isolated from the Far East starfish Hippasteria kurilensis collected in the Sea of Okhotsk. They were characterized as (22E,24R)-3-O-(2-O-methyl-beta-D-xylopyranosyl)-24-O-[2-O-methyl-beta-D-xylopyranosyl-(1 -> 5)-alpha-L-arabinofuranosyl]-5 alpha-cholest-22-ene-3 beta,4 beta,6 alpha,7 alpha,8,15 beta,24-heptaol (kurilensoside I) and (24S)-3-O-(2-O-methyl-beta-D-xylopyranosyl)-24-O-(alpha-L-arabinofuranosyl)-5 alpha-cholestane-3 beta,4 beta,6 beta,15 alpha, 24-pentaol (kurilensoside J). In addition, the earlier known glycosides linkosides F and L1, leviusculoside G, forbeside L, desulfated echinasteroside, and granulatoside A were isolated and identified. The structures of the new compounds were established with the help of two-dimentional NMR spectroscopy and mass-spectrometry.
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