Estudo químico de duas plantas medicinais da Amazônia: Philodendron scabrum K. Krause (Araceae) e Vatairea guianensis aubl. (Fabaceae)

Abstract

This work describes the chemical study of two medicinal plants of the Amazon Philodendron scabrum K. Krause (Araceae) and Vatairea guianensis Aubl. (Fabaceae). Essential oils composition from stems of Philodendron scabrum K. Krause (Araceae) and fruits of Vatairea guianensis Aubl. (Fabaceae), respectively were analyzed in GC-FID and GC-MS. The major constituents from stems of P. scarabum were caryophyllene oxide (22.42%), α-copaene (16.08%) and β-bisabolene (12.01%) and from fruits of V. guianensis were (9Z)-octadecenoic acid (24.95%) and docosahexenoic acid (24.17%). β-sitosterol and alkylresorcinol 1-hexadecanoyl-2,6-dihydroxybenzene were isolated from ethanolic extracts from stems of P. scabrum and from ethanolic extracts from fruits of V. guianensis, the athraquinones chrysophanol and physcion were isolated. The structure of isolated compounds we determinate wered based on data from 1H and 13C NMR, including two dimensional analyses and comparison with literature data.