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Fucoxanthin and Its Metabolites in Edible Brown Algae Cultivated in Deep Seawater
Three metabolites of fucoxanthin were isolated from a brown alga, Scytosiphon lomentaria, and the structure of a new compound was determined by NMR. The content of fucoxanthin, a biologically activeExpand
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Mechanism of potent antiperoxidative effect of capsaicin.
The effect of a pungent ingredient of red pepper, capsaicin, on lipid peroxidation of rat liver mitochondria (RLM) induced by ADP/Fe(2+) was studied. Capsaicin inhibited the lipid peroxidationExpand
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Structures of new plastoquinones from the brown alga Sargassum serratifolium
The structures of sargaquinoic acid and sargaquinal, new plastoquinones isolated from the brown alga Sargassum serratifolium, were elucidated as 1a and 2.
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An allelopathic fatty acid from the brown alga Cladosiphon okamuranus
Abstract An allelopathic substance was isolated from the methanol extract of the brown alga, Cladosiphon okamuranus . Extraction and purification of the active substance was monitored by bioassaysExpand
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Absolute configurations of marine diterpenes possessing a xenicane skeleton. An application of an advanced mosher's method
By means of Mosher's method using 1H NMR spectroscopy at 500 MHz the absolute configurations of marine diterpenes, 7 and 8, have been elucidated.
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Anti-Helicobacter pylori compounds from Santalum album.
Six new sesquiterpenes, (Z)-2beta-hydroxy-14-hydro-beta-santalol (1), (Z)-2alpha-hydroxy-albumol (2), 2R-(Z)-campherene-2,13-diol (3), (Z)-campherene-2beta,13-diol (4), (Z)-7-hydroxynuciferol (5),Expand
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Aliphatic sulfates released from Daphnia induce morphological defense of phytoplankton: isolation and synthesis of kairomones
Abstract Six aliphatic sulfates, kairomones released from a crustacean Daphnia pulex induce morphological changes of phytoplankton Scenedesmus gutwinskii at ppb (10 −9  g/mL) concentrations.
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A new aspect of the high-field NMR application of Mosher's method. The absolute configuration of marine triterpene sipholenol A
These results indicate that the high-field NMR application of Mosher's method may not work for a compound that possesses a sterically hindered secondary hydroxy group and that the problem can beExpand
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Absolute configurations of cytotoxic marine cembranolides; Consideration of mosher's method
Abstract Stereochemistry of the cembranolides 1 and 5 , isolated from the soft coral Sinularia mayi , has been elucidated by means of 2D NMR spectroscopy and X-ray crystallography. The absoluteExpand
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