Terpenoid constituents from leaves of Guarea kunthiana

From leaves of Guarea kunthiana one new kaurene diterpene (ent-kaur-16-en-2-one) was isolated along with eight known diterpenes (ent-kaur-16-ene, ent-3alpha- and 3beta-hydroxykaur-16-ene, kolavelool, kolavenol, kolavenal, ent-13-epi-manoyloxide and (-)-nephthenol), four sesquiterpenes (alismol, alis...

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Bibliographic Details
Published in:Journal of the Brazilian Chemical Society 2004-10, Vol.15 (5), p.767-772
Main Authors: Garcez, Fernanda R., Garcez, Walmir S., Silva, Ana Francisca G. da, Bazzo, Rita de Cássia, Resende, Ubirazilda M.
Format: Article
Language:Portuguese
Subjects:
CHEMISTRY, MULTIDISCIPLINARY
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Summary:From leaves of Guarea kunthiana one new kaurene diterpene (ent-kaur-16-en-2-one) was isolated along with eight known diterpenes (ent-kaur-16-ene, ent-3alpha- and 3beta-hydroxykaur-16-ene, kolavelool, kolavenol, kolavenal, ent-13-epi-manoyloxide and (-)-nephthenol), four sesquiterpenes (alismol, alismoxide, spathulenol and 4beta,10alpha-aromadendranediol), polyprenol-12 and alpha- and delta-tocopherols. Kolavenal is reported for the first time as a natural product, as well as the occurrence of cembrane- and ent-kaurane-type diterpenes in the Meliaceae.
ISSN:1678-4790
DOI:10.1590/S0103-50532004000500025