title: Cytotoxic sterols from the formosan brown alga Turbinaria ornata.
abstract: Two hydroperoxysterols 24-hydroperoxy-24-vinyl-cholesterol (1) and 29-hydroperoxystigmasta-5,24(28)-dien-3beta-ol (2), and fucosterol (3) were isolated from the brown alga Turbinaria ornata (Sargassaceae). Hydroperoxide 2 is a new natural compound and was converted into 29-hydroxystigmasta-5,24 (28)-dien-3beta-ol (4) by reaction with LAH. Sterols 1, 2, and 4 exhibited cytotoxicity against various cancer cell lines.
authors.forename: J H
authors.initials: JH
authors.lastname: Sheu
authors.forename: G H
authors.initials: GH
authors.lastname: Wang
authors.forename: P J
authors.initials: PJ
authors.lastname: Sung
authors.forename: Y H
authors.initials: YH
authors.lastname: Chiu
authors.forename: C Y
authors.initials: CY
authors.lastname: Duh