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A new diterpenoid, tolypodiol (1), has been isolated from the terrestrial cyanobacterium Tolypothrix nodosa (HT-58-2) and identified by NMR and mass spectral analysis. The monoacetate derivative 2 was prepared. Tolypodiol (1) and its monoacetate derivative 2 show potent antiinflammatory activity in the mouse ear edema assay.
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Prinsep et al. (1996) studied this question.
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