Abstract
Two triterpenes, beta-amyrin and 12-oleanene 3beta, 21beta-diol, were isolated as a mixture from the chloroform soluble fraction of an ethanol extract of Duranta repens Linn (Verbenaceae) stem. The structures of the two compounds were confirmed by analysis of their IR, (1)H-NMR, (13)C-NMR and LC-MS spectral data. The mixture of beta-amyrin and 12-oleanene 3beta, 21beta-diol (compound 1) was highly effective against the larvae of the mosquito, Culex quinquefasciatus Say (Diptera: Culicidae), as a mosquitocide.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Chromatography, High Pressure Liquid
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Culex* / growth & development
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Insecticide Resistance
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Insecticides / analysis
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Insecticides / chemistry*
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Insecticides / isolation & purification
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Larva
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Lethal Dose 50
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Magnetic Resonance Spectroscopy
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Mass Spectrometry
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Molecular Structure
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Mosquito Control
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Oleanolic Acid / analogs & derivatives
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Oleanolic Acid / analysis
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Oleanolic Acid / chemistry
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Oleanolic Acid / isolation & purification
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Plant Extracts / chemistry
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Plant Stems / chemistry
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Reproducibility of Results
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Spectrophotometry, Infrared
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Time Factors
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Triterpenes / analysis
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Triterpenes / chemistry*
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Triterpenes / isolation & purification
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Verbenaceae / chemistry*
Substances
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12-oleanene-3beta,21beta-diol
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Insecticides
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Plant Extracts
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Triterpenes
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Oleanolic Acid
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beta-amyrin