Iridoids
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Iridoides, triterpenos e outros constituintes das cascas do caule e flores de Tabebuia caraiba Bignoniaceae
The trunk bark of Tabebuia caraiba Bignoniaceae was found to contain four novel iridoids, 6-O-E-p-coumaroyljioglutin D (2), 6-O-E-p-coumaroyl-3-demethyl-3-O-ethyljioglutin D (3), 6-O-E-p-coumaroyl-1-demethyl-1-O-ethyljioglutin D (4), 7-O-E-p-coumaroyljiofuranaldehyde (5), three known iridoids, including one iridoid glucoside, jioglutin D (1), rehmaglutin D (
Quím. Nova. Publicado em: 2020-04
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2. Anti-angiogenic activity of iridoids from Galium tunetanum
ABSTRACT The phytochemical study of Galium tunetanum Lam., Rubiaceae, leaves led to the isolation of 13 compounds from the chloroform–methanol and the methanol extracts, including six iridoid glycosides, one non-glycoside iridoid, two p-coumaroyl iridoid glycosides, two phenolic acids, and two flavonoid glycosides. The structural determination of the isola
Rev. bras. farmacogn.. Publicado em: 2018-06
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3. Total phenolic, flavonoid, alkaloid and iridoid content and preventive effect of Lider-7-tang on lipopolysaccharide-induced acute lung injury in rats
Lider-7-tang, a medicine used for the treatment of respiratory diseases especially pneumonia and fever in Mongolian Traditional Medicine, was selected for this phytochemical and pharmacological study. The objectives of the study were to determine total biological active substances and analyze the effects of Lider-7-tang treatment in rats with acute lung inju
Braz J Med Biol Res. Publicado em: 19/10/2017
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4. Iridoids from leaf extract of Genipa americana
Abstract Genipa americana L., Rubiaceae, is a plant native from Brazil popularly known as “jenipapo”. Two iridoids, 1-hydroxy-7-(hydroxymethyl)-1,4aH,5H,7aH-cyclopenta[c]pyran-4-carbaldehyde (1), and iridoid 7-(hydroxymethyl)-1-methoxy-1H,4aH,5H,7aH-cyclopenta[c]pyran-4-carbaldehyde (2) were isolated and identified in the leaf extract of G. americana. Co
Rev. bras. farmacogn.. Publicado em: 2017-10
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5. Utilização de detecção por espalhamento de luz evaporativo para a análise de produtos naturais
The interest in the use of evaporative light scattering detector (ELSD) for the analysis of different classes of natural products has grown over the years. This is because this detector has become an excellent alternative compared to other types of detectors, such as the refractive index detector and the ultraviolet (UV) detector. This review describes the b
Química Nova. Publicado em: 2012
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6. Phytochemical profile and analgesic evaluation of Vitex cymosa leaf extracts
Vitex cymosa Bertero ex Spreng., Lamiaceae, is found in Central and Amazon regions of Brazil, where it is popularly used as antirheumatic. Extracts from the leaves of V. cymosa were tested in analgesia models such as abdominal contortions induced by acetic acid and formalin to test peripheral analgesia; as well as the tail flick and hot plate models, to test
Revista Brasileira de Farmacognosia. Publicado em: 02/09/2011
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7. Antifungal iridoids, triterpenes and phenol compounds from Alibertia myrciifolia Sprunge Ex. Schum
The new iridoid glucoside 10-O-vanilloyl-geniposidic acid has been isolated from the aerial parts of Alibertia myrciifolia along with hydroxyhopanone, 3α,22-dihydroxyhopane, ursolic acid, luteolin-3´,4´-dimethyl ether, caffeic acid and geniposidic acid. The structures of the isolated compounds were determined by means of mass spectrometry and nuclear magn
Química Nova. Publicado em: 2010
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8. Iridoids from Hymenodictyon floribundum
Das cascas do tronco e das folhas do Hymenodictyon floribundum B. L. Rob foram isolados dois novos iridoides, floribundano A (1) e floribundano B (2), e três compostos conhecidos, lupenona (3), escopoletina (4) e 4,5-di-hidroblumenol A (5). As estruturas de todos os compostos foram estabelecidas com base nos seus dados espectroscópicos.
Journal of the Brazilian Chemical Society. Publicado em: 2010
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9. Biological sensors based on immune response cells applied to the study of anti-allergic activity of natural compounds. / Utilização de sensores biológicos baseados em células de resposta imune no estudo da atividade antialérgica de substâncias naturais.
Anti-allergic activity of extracts and isolated compounds obtained from natural sources was investigated using the mast-cell based biosensor system. Mast cells release beta-hexosaminidase enzyme which is used as a marker of degranulation. Flavonoids (quercetin-Qc and rutin-Rt) and polyphenolic acids (caffeic acid-Cf and dimethoxy cinnamic acid-Dm) were used
Publicado em: 2009
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10. Avaliação qualitativa e quantitativa por CLAE de iridóides na Allamanda schottii / Qualitative and quantitative assessment by CLAE of iridoids in Allamanda schottii
O gênero Allamanda é conhecido pela sua capacidade de produzir alguns iridóides, flavonóides, cumarinas e triterpenóides que tem apresentado expressiva atividade biológica. O iridóide plumierídeo, isolado neste gênero, tem demostrado atividade antiinflamatória e antitumoral, e a plumericina atividade antineoplásica, antiflogística e antimicrobian
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/11/2008
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11. Efeito dos extratos de Harpagohytum procumbens (garra-do-diabo) e suas frações na atividade da COX-1 e COX-2 e na produção de NO em sangue total / Effects of harpagophytum procumbens (devils claw) extracts and its fractions on Cox-1 and Cox-2 activity and nitric oxide production in whole blood.
OBJECTIVE: The present study evaluated the effect of H. procumbens extracts and its fractions on COX-1 and COX-2 activity and NO production in whole blood assays of volunteers and OA patients. METHODS: The COX-1 and COX-2 activity was quantified as platelet TXB2 production in blood clotting and as PGE2 production in heparinized LPS-stimulated whole blood, re
Publicado em: 2008
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12. Estudo farmacobotânico de três espécies medicinais da caatinga em Pernambuco
Myracrodruon urundeuva Allemão (Anacardiaceae), Sideroxylon obtusifolium (Roem. &Schult.) T. D. Penn. (Sapotaceae) and Zizyphus joazeiro Mart. (Rhamnaceae) are native species of the caatinga, widely used as medicinal, specially parts from the stem bark of adult individuals. In general, it is collected hazardously and can let the plant to die and, consequent
Publicado em: 2008