New chromane derivatives isolated from the brown alga, Sargassum micracanthum.
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.
Makoto Iwashima
Makoto
M
Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan. iwsahi@pha.u-toyama.ac.jp
Tako
Natsuko
N
Hayakawa
Tomoyo
T
Matsunaga
Takayuki
T
Mori
Jun
J
Saito
Haruo
H
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*
C525780:7',8'-dihydro-9'-oxo-delta-tocotrienol; C525782:9'-oxo-delta-tocotrienol; D002839:Chromans; D024508:Tocotrienols