title: Starfish saponins, 48. Isolation of fifteen sterol constituents (six glycosides and nine polyhydroxysteroids) from the starfish Solaster borealis.
abstract: This paper reports a complete steroid glycoside and polyhydroxysteroid analysis of the starfish Solaster borealis, collected at Mutsu Bay, Japan. The glycosides include a new pentaglycoside steroid sulfate ("asterosaponin"), designated solasteroside A [1], two new sulfated 24-O-diglycosides, both with the common 5 alpha-cholesta-3 beta,6 alpha,8,15 alpha, 24-pentaol aglycone, borealosides A [2] and B [3], two new 24-O-(3-O-methyl)xylosides, borealosides C [4] and D [5], having the same aglycone with an additional hydroxy group at 4 beta-position in 5, and the known amurensoside B, previously isolated from Asterias amurensis. Among the polyhydroxysteroid constituents, four (7-10) are new, and five (11-15) have previously been isolated from starfishes.
authors.affiliation: Dipartimento di Chimica delle Sostanze Naturali, Università di Napoli Federico II, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Iorizzi
authors.forename: L
authors.initials: L
authors.lastname: Minale
authors.forename: R
authors.initials: R
authors.lastname: Riccio
authors.forename: T
authors.initials: T
authors.lastname: Yasumoto
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D006914:Hydroxysteroids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013215:Starfish / Q000737:chemistry*; D013261:Sterols / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D006027:Glycosides; D006914:Hydroxysteroids; D012503:Saponins; D013261:Sterols