Abstract
The CH2Cl2/CH3OH (1/1) extract of the dried stem of Drypetes chevalieri Beille afforded two new triterpenoïds named drypechevalin A (11-oxo-beta-amyrin-3beta-ylcaffeate) and drypechevalin B (3,7-dioxo-D:A-friedooleanan-24-al) along with five known compounds: lupeol, lupeone, erythrodiol, putranjivadione, friedelin. Their structures were established on the basis of spectroscopic analysis and chemical evidence.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Caffeic Acids / chemistry
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Caffeic Acids / isolation & purification
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Euphorbiaceae / chemistry*
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Hydrolysis
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Microbial Sensitivity Tests
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Plant Stems / chemistry
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Sesquiterpenes / chemistry
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Sesquiterpenes / isolation & purification*
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Sesquiterpenes / pharmacology
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Spectrometry, Mass, Electrospray Ionization
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Spectrophotometry, Infrared
Substances
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Caffeic Acids
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Sesquiterpenes