title: [New steroid glycosides from the starfish Fromia milleporella].
abstract: Two new steroid glycosides from the starfish Fromia milleporella collected in the Seychelles were isolated and characterized: milleporoside A, (20R, 24R)-29-O-[3-O-methyl-beta-D-xylopyranosyl-(1-->4)-3-O-methyl-beta-D-xylopyranosyl]-24-ethyl-5alpha-cholestane-3beta,4beta,6alpha,8,15beta,16beta,29-heptaol, and milleporoside B, (20R, 24R)-(22E)-28-O-[3-O-methyl-beta-D-xylopyranosyl-(1-->4)-3-O-methyl-beta-D-xylopyranosyl]-24-methyl-5alpha-cholest-22-ene-3beta,4beta,6alpha,8,15beta,16beta,28-heptaol. The structures of the glycosides were determined from their spectra and a comparison with spectral characteristics of known compounds. These compounds exhibit a moderate cytostatic activity toward the embryos of the sea urchin Strongylocentrotus intermedius.
authors.forename: E V
authors.initials: EV
authors.lastname: Levina
authors.forename: A I
authors.initials: AI
authors.lastname: Kalinovskiĭ
authors.forename: V S
authors.initials: VS
authors.lastname: Levin
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D004625:Embryo, Nonmammalian / Q000196:embryology; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D013215:Starfish / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D047269:Strongylocentrotus / Q000196:embryology / Q000254:growth & development
chemical_list: D000970:Antineoplastic Agents; D006027:Glycosides; D013256:Steroids