New triterpene isolated from Eschweilera longipes (Lecythidaceae).
The phytochemical studies of Eschweilera longipes Miers (Lecythidaceae) have led to the identification of a new triterpene 3beta, 24-dihydroxyfriedelane, the known 1beta, 2beta, 3beta, 19beta-tetrahydroxyurs-12-en-28-oic acid (1beta-hydroxyeucaphic acid) besides the saponin sitosterol 3betaO-betaD-glucopyranoside. The structures were established from the IR, NMR and mass spectra data including 2D NMR experiments of natural substances and of the acetyl derivative of the new triterpene.
da Costa
Patrícia M
PM
Departamento de Química, ICE, Universidade Federal Rural do Rio de Janeiro 23851-970 Seropédica, RJ, Brazil.
de Carvalho
Mário G
MG
D031381:Lecythidaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D018515:Plant Leaves / Q000737:chemistry; D013057:Spectrum Analysis; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D014934:Wood
D014315:Triterpenes