Produção Nacional
Revisado por pares
Flavonóide e triterpenos de Stigmaphyllom paralias
2003; Brazilian Chemical Society; Volume: 26; Issue: 4 Linguagem: Inglês
10.1590/s0100-40422003000400007
ISSN1678-7064
AutoresJorge M. David, Fátima A. Santos, Maria Lenise da Silva Guedes, Juceni P. David,
Tópico(s)Natural product bioactivities and synthesis
ResumoFLAVONOID AND TRITERPENES FROM STIGMAPHYLLOM PARALIAS.Stigmaphyllom paralias is a herb belonging to the family Malpighiaceae that occurs in sand soil of brazilian " restinga".This is the first report regarding phytochemical study with this species.The hexane extract of the aerial parts of plant afforded the triterpenes friedelin, lupenone, 3-oxo-α-amirin and 3-oxoβ-amirin, the mixture of α-amirinyl palmitate and stearate, lupeol and 3,4-seco-friedelan-3-oic acid.The AcOEt extract yielded the flavonoid luteolin-7-rutinoside.All compounds were characterized by analysis of spectrometric data and the fatty acids esterified with a-amirine were identified by GC/MS of methyl derivatives of transesterified products .This is the first natural occurence of 3,4-seco-friedelan-3-oic acid and the 13 C NMR spectral data were inequivocally assigned by two-dimensional techniques.This work also permitted to correct the 13 C NMR resonances attributed to methyl groups C-26 and C-27 of fridelin.
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