Cinchona
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Morpho-anatomy of native species used as substitute of quina (Cinchona spp.) in Brazilian traditional medicine: Esenbeckia febrifuga
ABSTRACT Esenbeckia febrifuga (A.St.-Hil.) A. Juss. ex Mart., Rutaceae, is known by several popular names including quina-do-mato. This name is a reference to the use of its bark as febrifuge and in the past was employed as a substitute of Cinchona sp. for treatment of malaria symptoms. This confusion may have been reinforced by the fact that the bark of the
Rev. bras. farmacogn.. Publicado em: 2018-04
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2. Morpho-anatomy and chemical profile of native species used as substitute of quina (Cinchona spp.) in Brazilian traditional medicine. Part II: Remijia ferruginea
ABSTRACT This research is part of a larger study of the Brazilian species that are commonly referred to as "quinas" and used as substitute of Cinchona species. In this study, we have performed the botanical characterization of the stem bark of Remijia ferruginea (A. St.-Hil.) DC., Rubiaceae, by morphological and anatomical description, and the analysis of it
Rev. bras. farmacogn.. Publicado em: 2017-04
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3. Morpho-anatomy and chemical profile of native species used as substitutes of quina (Cinchona spp.) in Brazilian traditional medicine. Part I: Polyouratea hexasperma
This research is part of a larger study of the Brazilian species that are commonly referred to as quinas and are usually used as substitute of Cinchona species. The purpose of the present study was the botanical characterization of the whole and powdered stem bark of Polyouratea hexasperma (A. St.-Hil.) Tiegh., Ochnaceae, by morphological and anatomical desc
Rev. bras. farmacogn.. Publicado em: 20/08/2013
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4. Estudo de toxicidade reprodutiva e potencial mutagênico de fitoterápico contendo Cinchona calisaya, Jateorhiza palmata, Centaurim erythraea, Baccharis trimera, Artemisia absinthium, Matricaria recutita e Cinnamomum cassia / Study of the reproductive toxicity and mutagenic potential of a herbal medicine containing Cinchona calisaya; Jateorhiza palmata, Centaurim erythraea, Baccharis trimera, Artemisia absinthium, Matricaria recutita and Cinnamomum cassia
The use of medicinal plants is widespread, and most herbal medicines are marketed for sale without prescription. One of the main problems in the use of these products is the belief that plant products are free of toxic effects. Pregnant women constitute a group that traditionally uses herbal medicines, believing that they cause no damage to the fetus. The he
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2011
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5. Eletrophoretic and spectrometric characterization of Cinchona extracts of use phytoterapic and cosmetic / Caracterização eletroforética e espectrométrica de extratos de Cinchona de uso fitoterápico e cosmético
Every year, malaria kills about one million people. According to OMS, 3.3 billion people, half of the world population, are exposed to the disease, mostly in underdeveloped countries. The pharmaceuticals used in the treatment of malaria include: chloroquine, primaquine, quinine, mefloquine, doxyclyne, clindamicina and artemisin. The increased resistance of t
Publicado em: 2010
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6. Estudos por RMN de 1H das interações de substratos carbonílicos e carboxílicos com agentes de discriminação quiral / 1H NMR investigations of the interactions of carbonyl and carboxyl derivatives with chiral discriminating agents
Os sais derivados de alcalóides da Cinchona têm sido muito utilizados como catalisadores de transferência de fase, em reações assimétricas. No entanto, sua performance como agentes de discriminação quiral tem sido pouco explorada. Com o objetivo de melhor compreender as bases moleculares que comandam o reconhecimento quiral dos isômeros ópticos de
Publicado em: 2010
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7. Avaliação de parâmetros de extração da Cinchona Vahl por métodos farmacopéicos e não farmacopéicos
O presente estudo teve como objetivo a otimização de parâmetros cinéticos de extração da Cinchona pubescens Vahl por ultra-som, usando métodos farmacopéicos e não farmacopéicos. Na extração por ultrasom variaram-se o tempo, a massa, a faixa granulométrica, o volume de solvente e o tipo de solvente. Na decocção, as extrações foram feitas no t
Revista Brasileira de Farmacognosia. Publicado em: 2009-09
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8. Enantioselective transport of D,L-phenylalanine and D,L-phenylglycine through a bulk liquid membrane containing cinchona alkaloid derivatives as chiral selectors
Diversos derivados de Cinchona foram testados como carregadores quirais móveis, para o transporte enantiosseletivo de D,L-fenilglicina e D,L-fenilalanina, através de uma membrana líquida orgânica volumosa (MLV). Os efeitos de vários parâmetros, como natureza do carregador, concentrações do solvente na membrana, do tampão, do soluto e do carregador,
Journal of the Brazilian Chemical Society. Publicado em: 2009
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9. Quinina: 470 anos de história, controvérsias e desenvolvimento
After 470 years, a history of development, international seed smuggling and scientific development that caused deep changes in our society, has reached an end. In 1638, the countess of Chinchón contracted a disease while in the Amazon rain forest and was healed by a potion used by the native inhabitants. In 1856, William H. Perkin while attempting to obtain
Química Nova. Publicado em: 2009
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10. Cytotaxonomy of representative Rubicideae subfamily (Rubiaceae) from "cerrados" of the São Paulo state / Citotaxonomia de representantes da subfamilia Rubioideae (Rubiaceae) nos cerrados do Estado de São Paulo
As Rubiaceae (A. L. de Jussieu), ordem Gentianales, subclado Euasteride I do clado Asteride, é composta por plantas de hábito variado, e compreende uma das maiores famílias de Angiospermas. A família está subdividida em quatro subfamílias, 637 gêneros e aproximadamente 10.700 espécies. São plantas cosmopolitas, com espécies de considerável express
Publicado em: 2007
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11. Dendrology, wood anatomy and status conservation of species of the Cinchona, Croton and Uncarias genus from Acre state, Brasil. / Dendrologia, anatomia do lenho e "status" de conservação das espécies lenhosas dos gêneros Cinchona, Croton e Uncaria no estado do Acre, Brasil.
This research studied eight wood species of the genus Cinchona (C. amazonica Standl.), Croton (C. billbergianus Müll.Arg. C. floribundus Spreng.; C. lechleri, Müll.Arg.; C. matourensis Aubl. and C. palanostigma Klotzsch) and Uncaria (U. guianensis (Aubl.)J.F. Gmel. and U. tomentosa (Willd. ex Roem. &Schult.)DC.). All of them with medicinal interest, grown
Publicado em: 2004
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12. A Interação substrato-modificador e sua importância para a hidrogenação enantiosseletiva de alfa-cetoésteres
The heterogeneous asymmetric catalysis plays an important and crucial role in many chemical processes and has therefore become a growing and interesting field. The enantioselective hydrogenation of α-ketoesters is one of the best known examples of such process. Methyl pyruvate, which can be converted to (R)- and (S)-methyl lactate with an enantioselecti
Publicado em: 2004