Phytochemistry 2005-Oct
Bioactive phenolic compounds from a medicinal lichen, Usnea longissima.
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Abstracto
Natural products, longissiminone A (1) and longissiminone B (2), were isolated along with a known compound, glutinol (3), from a medicinal lichen, Usnea longissima. The structures of compounds 1 and 2 were determined with the help of spectroscopic studies. Compound 1 was found to possess potent anti-inflammatory activity in a cell-based contemporary assay. Cytotoxicity activity measured by cell viability assay showed 100% viability in the presence of 200 microg/mL conc. of these compounds.