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Navegando Produção Cientifica por Assunto "19-nor-isopimara-7,15,4(18)-trien-3-one"

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    New diterpenoids from leaves of Guarea macrophylla (Meliaceae)
    Lago J.H.G.; Roque N.F. (2005)
    The hexane phase from the ethanol extract from leaves of Guarea macrophylla (Meliaceae) was submitted to chromatographic separation. These procedures allowed the isolation of one new diterpenoid: 7α-hydroperoxy-isopimara- 8(14),15-diene-2α,3β-diol, one new nor-diterpenoid: 19-nor-isopimara-7,15,4(18)-trien-3-one besides seven known diterpenoids. Their structures were deduced by analysis of spectrometric data and comparison of data described in the literature. ©2005 Sociedade Brasileira de Química.