Hongoquercins A and B, new sesquiterpenoid antibiotics : Isolation, structure elucidation, and antibacterial activity
1998
Two new sesquiterpenoid antibiotics, hongoquercins A and B, were isolated from the extracts of an unidentified fungus. The structures of both metabolites were determined by spectroscopic analysis. They are related to a class of compounds commonly found in brown algae and dictyoceratid sponges. Hongoquercin A exhibited moderate activity against Gram-positive bacteria.
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