Abstract
The MeOH extract of the stem barks of Drypetes tessmanniana (Euphorbiaceae) afforded two new triterpene derivatives characterized as 3beta-O-(E)-3,5-dihydroxycinnamoyl-11-oxo-olean-12-ene and 3beta,6alpha-dihydroxylup-20(29)-ene together with seven known compounds. Their structures were established on the basis of spectral analysis.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Coumaric Acids / chemistry*
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Coumaric Acids / isolation & purification
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Euphorbiaceae / chemistry*
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Magnetic Resonance Spectroscopy
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Oleanolic Acid / analogs & derivatives*
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Oleanolic Acid / chemistry
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Oleanolic Acid / isolation & purification
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Plant Bark / chemistry
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Spectrometry, Mass, Electrospray Ionization
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Spectrophotometry, Infrared
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Triterpenes / chemistry*
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Triterpenes / isolation & purification
Substances
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3,6-dihydroxylup-20(29)-ene
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3beta-O-(E)-3,5-dihydroxycinnamoyl-11-oxo-olean-12-ene
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Coumaric Acids
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Triterpenes
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Oleanolic Acid