RESUMO
The seeds and the pulp of Gardenia volkensii yielded one new iridiod, namely 4-(2N-gardenamide)n-butanoic acid, together with the known iridoids genipin and genipin gentiobioside, the pterocarpin medicarpin, coumarins, phenylpropanoids, benzenoids and triterpenes. The structures of these were determined on the basis of spectroscopic data and by comparison of obtained data with those from literature. The fruit extracts of this plant exhibited moderate radical scavenging activity against DPPH radical and moderate lethality against brine shrimps (Artemia salina).
Assuntos
Compostos de Bifenilo/química , Butiratos/química , Gardenia/química , Hidrazinas/química , Extratos Vegetais/química , Piridonas/química , Animais , Artemia/efeitos dos fármacos , Compostos de Bifenilo/farmacologia , Butiratos/farmacologia , Ácido Butírico/química , Cromatografia em Camada Fina , Relação Dose-Resposta a Droga , Sequestradores de Radicais Livres/química , Sequestradores de Radicais Livres/farmacologia , Hidrazinas/farmacologia , Glicosídeos Iridoides , Iridoides/química , Espectroscopia de Ressonância Magnética , Estrutura Molecular , Picratos , Extratos Vegetais/farmacologia , Piridonas/farmacologia , Sementes/químicaRESUMO
Three ent-trachylobane diterpenes have been isolated from the leaf exudates of Psiadia punctulata and characterised as 6alpha,17,19-ent-trachylobantriol; 2alpha,18,19-ent-trachylobantriol; and 2beta,6alpha,18,19-ent-trachylobantetraol. The structures were determined on the basis of spectroscopic evidence.
