title: Cytotoxic activity of marine algae and a cytotoxic principle of the brown alga Sargassum tortile.
abstract: Partition fractions of hexane, CCl4 and CHCl3 from methanolic extracts of marine algae were each examined for cytotoxic activities against cultured P-388 lymphocytic leukemia cells. Cytotoxic activities were found for partition fractions of 21 species of seaweed. Bioactivity-guided fractionation of the CCl4 partition fraction from Sargassum tortile, exhibiting the most prominent activity, afforded dihydroxysargaquinone (1) and sargatriol (2) previously isolated from this alga. The former was evaluated as a cytotoxic principle, and the latter, showing moderate activity, was suggested to be an artifact derived from 1 during the isolation procedure.
authors.affiliation: Osaka University of Pharmaceutical Sciences, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Numata
authors.forename: S
authors.initials: S
authors.lastname: Kanbara
authors.forename: C
authors.initials: C
authors.lastname: Takahashi
authors.forename: R
authors.initials: R
authors.lastname: Fujiki
authors.forename: M
authors.initials: M
authors.lastname: Yoneda
authors.forename: E
authors.initials: E
authors.lastname: Fujita
authors.forename: Y
authors.initials: Y
authors.lastname: Nabeshima
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000302:isolation & purification / Q000494:pharmacology*; D007941:Leukemia P388 / Q000188:drug therapy; D051379:Mice; D000459:Phaeophyceae / Q000737:chemistry*
chemical_list: D000970:Antineoplastic Agents