Chemical constituents from the roots of Spathelia excelsa and their antiprotozoal activity

AUTOR(ES)

Moreira, Wagner A. dos Santos, Lima, Maria da Paz, Ferreira, Antonio Gilberto, Ferreira, Izabel C. Piloto, Nakamura, Celso V.

FONTE

Journal of the Brazilian Chemical Society

DATA DE PUBLICAÇÃO

2009

RESUMO

A investigação fitoquímica das raízes de Spathelia excelsa levou ao isolamento das cromonas 10(2,3-epóxi-3-metilbutanil)spatheliacromeno e 10(2,3-diidroxi-3-metilbutanil) metoxispatheliacromeno (5-metoxispatheliabiscromeno); o limonóide desacetilspathelinae epímero C-21 do protolimonóide 3β-angeloiloxi-7α,24,25-triidroxi-21,23-óxido-14,18-cicloapotirucal-21-hemiacetal; os alcalóides 7,8-dimetoxiflindersina, casimiroinaeN-methyl-4,7,8-trimetoxiquinolino-2(1H)-ona, além da mistura de β-sitosterol e stigmasterol. Nos ensaios biológicos sobre a forma promastigosta de Leishmania braziliensis, desacetilspathelina apresentou atividade moderada e sobre a forma epimastigota de Trypanossoma cruzi, 10(2,3-epóxi-3-metilbutanil)spatheliacromeno apresentou atividade forte (IC50= 11 µg mL-1).

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