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.
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| Format: | Digital revista |
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| Language: | English |
| Published: |
Academia Brasileira de Ciências
2003
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652003000100003 |
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