Two new bromophenols from the red alga odonthalia corymbifera
Two novel bromophenols (1 and 2) were isolated from an extract of a red alga, Odonthalia corymbifera, together with a known bromophenol (3). The novel bromophenols were determined as 4-bromo-2, 3-dihydroxy-6-hydroxymethylphenyl 2, 5-dibromo-6-hydroxy-3-hydroxymethylphenyl ether (1) and bis(2, 3-dibromo-4,5-dihydroxybenzyl) ether (2), from spectroscopic evidence. Compounds 1-3 were found to be inactivators of alpha-glucosidase.
Department of Marine Bioresources Chemistry, Faculty of Fisheries, Hokkaido University, Minato, Hakodate, Hokkaido 041-8611, Japan, and Department of Bioscience and Chemistry, Faculty of Agriculture, Hokkaido University, Kita-ku, Sapporo, Hokkaid.
H
Kurihara
T
Mitani
J
Kawabata
K
Takahashi