Browsing by Author "Muñoz Muñoz, Orlando"
Now showing items 1-20 of 34
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(2000)A novel cucurbitacin glycoside has been isolated from aerial parts of Kageneckia oblonga R. et P. and shown to be 3 beta-(beta-D-glucosyloxy)-16 alpha,23 alpha-epoxycucurbita-5,24-dien-11-one. The structure was established ...
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(2010)The absolute configuration of semisynthetic (-)-3α,6β- acetoxytropane 1, prepared from (-)-6β-hydroxyhyoscyamine 2, has been determined using vibrational circular dichroism (VCD) spectroscopy. The vibrational spectra (IR ...
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(1997)Thirteen alkaloids were identified from the stem-bark of Erythroxylum lucidum by GC-MS. Seven of these have not been reported previously in the genus Erythroxylum. Most of them are precursors or intermediates in the ...
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(1997)Chilean folklore medicine uses Trevoa trinervis Miers. (Rhamnaceae), 'trevo', for the treatment of inflammation caused by wounds and burns. The antiinflammatory and antipyretic activities of crude methanol, aqueous and ...
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(2009)A purified stem bark extract from Schizanthus grahamii was analyzed by combining capillary gas chromatography with a selective nitrogen phosphorus detector, mass spectrometry and Fourier transform infrared spectroscopy. ...
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(1996)Essential oil, obtained by hydrodistillation, from fresh leaves of Satureja gilliesii (Grah.) Briq. (Lamiaceae), which is an endemic species of Chile, was analyzed by GC and GC/MS. The major constituents were the oxygenated ...
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(1996)The essential oils of two samples of Satureja boliviana (Benth.) Briq. collected in Peru and Bolivia, were obtained by hydrodistillation, and analyzed by capillary GC and GC/MS. The major constituents of the Peruvian oil ...
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(1998)Stress, pathogens or insects induce profound changes in the expression of the chemical constituents of plants. Some of these changes could be adaptations to the new conditions or the expression of new defensive characteristics. ...
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(2011)Objectives Aristotelia chilensis leaves (Elaeocarpaceae) are used in Chilean folk medicine to treat pain and inflammation. A bioguided study was carried out on serial extracts (hexane, dichloromethane, methanol, aqueous ...
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(Springer, 2020)The genusSchizanthus(Solanaceae) comprises 12 accepted species primarily endemic to Chile. It is characterized by the presence of numerous tropane alkaloids found as ester derivatives of isomeric acids like angelic, ...
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(2011)The strict application of IUPAC rules for the numbering of tropane alkaloids is not always applied by authors and there is hence a lot of confusion in the literature. In most cases, the notation of 3, 6/7-disubstituted ...
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(2002)The cladistic relationships between Schizanthus species, based primarily on morphology, and chemical characters when available are presented. In this investigation we did not find supporting evidence for the theories ...
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(2011)The chemical composition of the essential oils obtained by hydrodistillation of stem bark and leaves of Drimys winteri J.R. et G. Foster var. chilensis /DC A. Gray (Winteraceae) from Chiloe Island (ID) and Continental Chile ...
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(Universidad de Chile., 1974)El estudio de la composición esteroidal de una especie de phymactis es investigado. Colesterol es el esterol predominante y corresponde al 90% de la mezcla de esteroles libres. A lo menos otros 3 esteroles fueron también ...
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(VERLAG Z NATURFORSCH, 2002-09)Muehlenbeckia hastulata (J. E.Sm.) Johnst. used mainly for its abortive properties was found active for oxytoxic and analgesic activities in a biological activity screening (oxytoxic, analgesic, antimicrobial, cytotoxic ...
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(Sociedade Brasileira de Quimica, 2007)A comparison of the phenolic content of several Chilean honeys showed great variations in flavonoid concentration among the samples analysed. Higher amounts of phenolics are found in honey from dry climates. The antioxidant ...
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(2002)Cucurbitacin F and the cyanogenetic compounds prunasin were isolated and identified from the seeds of Kageneckia angustifolia.
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(Universidad de Chile, 1981)Del estudio quimico de L. confertum, se han aislado un total de 14 alcaloides, dos de los cuales constituyen, las bases mayoritarias de la especie: deacetilpaniculina (LC1) Y PANICULINA (LC3). Se reviso la estructura de ...
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(2006)Two fully automated HPLC-NMR methods are reported and compared for the structure elucidation of four isomeric tropane alkaloids from the stem-bark of an endemic Chilean plant, Schizanthus grahamii Gill. (Solanaceae). The ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2006-03)A rapid in vitro propagation system leading to formation of shoots from callus, roots, and plantlets was developed for Schizanthus hookeri Gill. (Solanaceae), an endemic Chilean plant. The genus Schizanthus is of particular ...
