title: [Two new steroid glycosides from the Far East starfish Hippasteria kurilensis].
abstract: 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]-5alpha-cholest-22-ene-3beta,4beta,6alpha,7alpha,8,15beta,24-heptaol (kurilensosid I) and (24S)-3-O-(2-O-methyl-beta-D-xylopyranosyl)-24-O-(alpha-L-arabinofuranosyl)-5alpha-cholestan-3beta,4beta,6beta,15alpha,24-pentaol (kurilensosid J). In addition, the earlier known glycosides linkosides F and L1, levisculoside G, forbeside L, desulfated echinasteroside A, and granulatoside A were isolated and identified. The structures of the new compounds were established with the help of bidimentional NMR spectroscopy and mass spectrometry.
authors.forename: A A
authors.initials: AA
authors.lastname: Kicha
authors.forename: N V
authors.initials: NV
authors.lastname: Ivanchina
authors.forename: A I
authors.initials: AI
authors.lastname: Kalinovskiĭ
authors.forename: P S
authors.initials: PS
authors.lastname: Dmitrenok
authors.forename: A V
authors.initials: AV
authors.lastname: Smirnov
mesh_terms: D000818:Animals; D002776:Cholestanes / Q000302:isolation & purification*; D002782:Cholestenes / Q000302:isolation & purification*; D005202:Asia, Eastern; D006027:Glycosides / Q000096:biosynthesis / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009792:Oceans and Seas; D012426:Russia; D021241:Spectrometry, Mass, Electrospray Ionization; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013215:Starfish / Q000737:chemistry* / Q000254:growth & development; D013256:Steroids / Q000302:isolation & purification*
chemical_list: C548119:(22E,24R)-3-O-(2-O-methyl-beta-D-xylopyranosyl)-24-O-(2-O-methyl-beta-D-xylopyranosyl-(1-5)-alpha-L-arabinofuranosyl)-5alpha-cholest-22-ene-3beta,4beta,6alpha,7alpha,8,15beta,24-heptaol; C548120:(24S)-3-O-(2-O-methyl-beta-D-xylopyranosyl)-24-O-(alpha-L-arabinofuranosyl)-5alpha-cholestane-3beta,4beta,6beta,15alpha,24-pentaol; D002776:Cholestanes; D002782:Cholestenes; D006027:Glycosides; D013256:Steroids