Australian Journal of Chemistry · 1999 · 15 citations · 0 references
Life SciencesBotanyChemistryPhycologyPlant BiochemistrySteroid BiochemistryAlgal BiochemistryAlgal SystematicsBrown AlgaeGreen AlgaeSteroid StructureTerpenoid BiosynthesisAlgal Bioactive CompoundsAlgal MetabolitesBioactive Compounds From Marine FungiGreen Algal Secondary MetabolitesMass Spectrometric IdentificationRed Algal Secondary MetabolitesSecondary Metabolites In Brown AlgaeStructure Elucidation Of Marine Natural Products
Two new steroids, (20 S )-3ß,20-dihydroxyergosta-5,24(28)-dien-16-one (7) and 3ß-hydroxyergosta-5,24(28)-dien-16-one (9), and two new diastereoisomeric meroditerpenes, compounds (10) and (11), † have been isolated from the brown alga Cystophora brownii (Cystoseiraceae). Their structures were elucidated by one- and two-dimensional n.m.r. and other spectrometric and chemical methods.