title: New chromane derivatives isolated from the brown alga, Sargassum micracanthum.
abstract: Two new chromane type meroterpenoids were isolated from the methanolic extract of the brown alga, Sargassum micracanthum. Their structures were elucidated based on spectroscopic analysis and chemical conversion. The absolute stereochemistry of the methyl group at C-8' in 1 and related compounds were determined by modified Mosher's method.
authors.affiliation: Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan. iwsahi@pha.u-toyama.ac.jp
authors.forename: Makoto
authors.initials: M
authors.lastname: Makoto Iwashima
authors.forename: Natsuko
authors.initials: N
authors.lastname: Tako
authors.forename: Tomoyo
authors.initials: T
authors.lastname: Hayakawa
authors.forename: Takayuki
authors.initials: T
authors.lastname: Matsunaga
authors.forename: Jun
authors.initials: J
authors.lastname: Mori
authors.forename: Haruo
authors.initials: H
authors.lastname: Saito
mesh_terms: D002839:Chromans / Q000737:chemistry / Q000302:isolation & purification*; D007564:Japan; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D000459:Phaeophyceae / Q000737:chemistry*; D044647:Sargassum / Q000737:chemistry*; D024508:Tocotrienols / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C525780:7',8'-dihydro-9'-oxo-delta-tocotrienol; C525782:9'-oxo-delta-tocotrienol; D002839:Chromans; D024508:Tocotrienols