Pentacyclic Triterpene
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Extracts of the Native Brazilian Tree Garcinia gardneriana Inhibit Urediniospore Germination of Coffee Leaf Rust Fungus
The fungal Hemileia vastatrix is the causal agent of coffee leaf rust, one of the worst and devastating disease in coffee cultures worldwide. As a result of our research on natural products for the development of novel agrochemicals, we found that the hexane extract from leaves of the Brazilian medicinal plant Garcinia gardneriana, at 500 μg mL-1, inhibited
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Quantification of bergenin, antioxidant activity and nitric oxide inhibition from bark, leaf and twig of Endopleura uchi
Phytochemical investigation of Endopleura uchi led to the isolation of a gallic acid derivate, known as bergenin (2) and friedelin (1), a pentacyclic triterpene. The present work also reports the bergenin quantification in different Endopleura uchi bark, twig and leaves extracts. Our findings showed the highest bergenin concentration in bark methanol extract
Quím. Nova. Publicado em: 2020-04
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3. Psychotria viridis: Chemical constituents from leaves and biological properties
ABSTRACT The phytochemical study of hexane, chloroform and methanol extracts from leaves of Psychotria viridis resulted in the identification of: the pentacyclic triterpenes, ursolic and oleanolic acid; the steroids, 24-methylene-cycloartanol, stigmasterol and β-sitosterol; the glycosylated steroids 3-O-β-D-glucosyl-β-sitosterol and 3-O-β-D-glucosyl-stig
An. Acad. Bras. Ciênc.. Publicado em: 2017-06
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4. Pentacyclic triterpenes from Cecropia telenitida with immunomodulatory activity on dendritic cells
Pentacyclic triterpene Natural product Cytokine modulation Anti-inflammatory activity Dendritic cells Pentacyclic triterpenes are a large family of plant metabolites that exhibit a wide array of biological activities. The genus Cecropia,which encompasses many plant species, has been used as traditional medicine for the treatment of inflammatory diseases and
Rev. bras. farmacogn.. Publicado em: 2013-10
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5. AVALIAÃÃO DAS ATIVIDADES HIPOGLICEMIANTE E HIPOLIPIDÃMICA DA MISTURA DE α,β-AMIRINA, TRITERPENOS PENTACÃCLICOS ISOLADOS DO Protium heptaphyllum, EM CAMUNDONGOS / EVALUATION OF HYPOGLYCEMIC AND HYPOLIPIDEMIC ACTIVITY OF MIXTURE OF Α,Β-AMYRIN, PENTACYCLIC TRITERPENES ISOLATED OF Protium Heptaphyllum IN MICE
O Protium heptaphyllum (almecegueira) exsuda uma resina amorfa constituÃda de quatro misturas binÃrias de triterpenÃides, sendo a mistura de ,-amirina o constituinte majoritÃrio. Na medicina popular, a resina de Protium heptaphyllum à utilizada como antiinflamatÃria, gastroprotetora, analgÃsica, expectorante e cicatrizante. A mistura d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/11/2011
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6. Estudo da atividade antinoceptiva de β-amirina, um triterpeno pentaciclÃco isolado de Protium heptaphyllum March. em modelos experimentais de dor. / Studies on the antinociceptive activity of β-amyrin, a pentacyclic triterpene isolated from Protium heptaphyllum March. (Burceraceae) in experimental models of pain.
Os efeitos dos triterpenos pentaciclicos -amirina e -amirina, isolados a partir da resina de Protium heptaphyllum March. (Burseraceae), foram testados preliminarmente em modelos de nocicepÃÃo oral, sendo que -amirina apresentou significantes efeitos antinociceptivos, norteando a pesquisa com este isolado na investigaÃÃo de seus ef
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/04/2010
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7. Chemical constituents of Salacia elliptica (Celastraceae)
The chemical investigation of Salacia elliptica allowed to the isolation of 20 constituents: two polyols, one xanthone, a mixture of long chain hydrocarbons, one carboxylic acid, one polymer, two steroidal compounds, one aromatic ester and eleven pentacyclic triterpenes. These triterpenes include 3β-stearyloxy-oleanane, 3β-stearyloxy-ursane, one seco-fried
Química Nova. Publicado em: 2010
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8. Contribuição ao conhecimento químico da flora acreana: Protium hebetatum Daly, Protium heptaphyllum(Aublet) Marchand subsp. ulei (Swat) Daly e Protium heptaphyllum (Aublet) Marchand subsp. heptaphyllum / Contribution to the chemical knowledge of the Acre flora: Protium hebetatum Daly, Protium heptaphyllum (Aublet) Marchand subsp. ulei (Swat) and Daly Protium heptaphyllum (Aublet) Marchand subsp. heptaphyllum
This work presents study phytochemistry of three species of plants of the family Burseraceae: Protium hebetatum Daly (PHB), Protium heptaphyllum (Aublet) Marchand subsp. ulei (Swat) Daly (PHU) and the Protium heptaphyllum (Aublet) Marchand subsp. heptaphyllum (PHH), known, at random, as pitch, pitch-white and almécego. The species were collected in the muni
Publicado em: 2010
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9. In vitro evaluation of the cytotoxic and trypanocidal activities of Ampelozizyphus amazonicus (Rhamnaceae)
Ampelozizyphus amazonicus Ducke is a tree commonly found in the Amazon region and an extract of its stem bark is popularly used as an antimalarial and anti-inflammatory agent and as an antidote to snake venom. Ursolic acid; five lupane type triterpenes: betulin, betulinic acid, lupenone, 3ß-hydroxylup-20(29)-ene-27,28-dioic acid, and 2a,3ß-dihydroxylup-20(
Brazilian Journal of Medical and Biological Research. Publicado em: 2007-05
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10. Enhanced triterpene production in Tabernaemontana catharinensis cell suspension cultures in response to biotic elicitors
Cell suspension cultures of Tabernaemontana catharinensis were treated with autoclaved homogenates of Candida albicans, Fusarium oxysporum, Penicillium avelanium and Saccharomyces cerevisiae. The effects caused by the concentration, exposure time and the type of elicitor on the accumulation of pentacyclic triterpenes were monitored. When exposed to biotic el
Química Nova. Publicado em: 2007
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11. Antiulcerogenic activity of crude extracts, fractions and active compound from the species Vernonia polyanthes e Vernonia ferruginea / Atividade antiulcerogenica de extratos brutos, frações semi-purificadas e substancia ativa de duas especies do genero Vernonia : Vernonia polyanthes e Vernonia ferruginea
The genus Vernonia (Asteraceae), which includes about 1.000 species, figures as the most representative from its family. From a systematic point of view, Vernonia is one of the most complex genus of its family, mainly because of its diverse biological forms, from small herbs through big trees. This genus possesses a great pharmacological potential and is alw
Publicado em: 2007
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12. A new pentacyclic triterpene isolated from Myroxylon balsamum (syn. Myroxylon peruiferum)
Um novo triterpeno pentacíclico, o 11alfa-metoxi-beta-amirina (1) foi isolado de Myroxylon balsamum (L.) Harms (sin. Myroxylon peruiferum L.f.). A estrutura desta substância foi elucidada pela análise de seus dados de IV, EM, RMN ¹H e 13C. RMN bidimensional foi também utilizada para definir a estrutura e atribuir os deslocamentos químicos dos átomos d
Journal of the Brazilian Chemical Society. Publicado em: 2000-04