Abstract
Using brine shrimp lethality to direct fractionation, extracts of the bark of Annona bullata Rich. (Annonaceae) have yielded 16α-hydroxy-(–)-kauranoic acid as a bioactive plant constituent. This previously known diterpene showed significant (ED50 8.25 × 10−2 µg/ml) and selective cytotoxicity against A-549 (lung) cells in our panel of human tumor cells.
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Hui, Yh., Chang, Cj., Smith, D.L. et al. 16α-Hydroxy-(–)-kauranoic Acid: A Selectively Cytotoxic Diterpene from Annona bullata . Pharm Res 7, 376–378 (1990). https://doi.org/10.1023/A:1015819422479
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DOI: https://doi.org/10.1023/A:1015819422479