Xanthones
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Mangostanaxanthone VIIII, a new xanthone from Garcinia mangostana pericarps, α-amylase inhibitory activity, and molecular docking studies
ABSTRACT A new xanthone: mangostanaxanthone VIIII [1,3,5,6,7-pentahydroxy-2-(3-methylbut-2-enyl)-8-(3-hydroxy-3-methylbut-1-enyl) xanthone] (5) and four known xanthones: mangostanaxanthones I (1) and II (2), γ-mangostin (3), and mangostanaxanthone VII (4) were separated and characterized from the acetone fraction of Garcinia mangostana L., Clusiaceae (mango
Rev. bras. farmacogn.. Publicado em: 27/05/2019
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2. Phytochemical Characterization and Effect of Cagaita Leaf Extracts on Aspergillus Sp.
ABSTRACT Fungi of the genus Aspergillus may promote damage to the physiological quality of forest seeds, and plant extracts have been used to control microflora associated with these seeds. Thus, the aim of the present work was to perform the phytochemical characterization of ethanolic and aqueous extracts obtained from Eugenia dysenterica leaves (cagaita),
Floresta Ambient.. Publicado em: 04/04/2019
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3. Providing added value to local uses of paparahua (Artocarpus altilis) in Amazonian Ecuador by phytochemical data review
Abstract Artocarpus altilis (Parkinson ex F.A.Zorn.) Fosberg, Moraceae, is a native tree of Southeast Asia introduced to South America at the beginning of the 19th century. It has been used by several indigenous communities. This paper aims to preserve the traditional knowledge at risk of loss and to validate some of the applications found. Current ancestral
Rev. bras. farmacogn.. Publicado em: 2019-02
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4. Evaluation of cytogenotoxicity, antioxidant and hypoglycemiant activities of isolate compounds from Mansoa hirsuta D.C. (Bignoniaceae)
ABSTRACT Mansoa hirsuta (Bignoniaceae) is a native plant from caatinga in Brazilian semiarid. This plant has been locally used as antimicrobial and hypoglycemiant agents, but their action mechanisms and toxicity remain largely unknown. Therefore, we evaluated the composition and antioxidant, cytoprotective and hypoglycemiant effects of raw extract, fractions
An. Acad. Bras. Ciênc.. Publicado em: 2017-03
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5. Metabolic profile and β-glucuronidase inhibitory property of three species of Swertia
ABSTRACT β-Glucuronidase inhibitors are suggested as potential hepatoprotective agents. Swertia chirayita (Roxb.) Buch.-Ham. ex C.B. Clarke, Gentianaceae, is known for its hepatoprotective and anti-hepatotoxic activity in Ayurvedic system of medicine for ages. This plant is substituted by other species like S. decussata Nimmo ex C.B. Clarke and S. bimaculat
Rev. bras. farmacogn.. Publicado em: 2017-02
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6. Antiproliferative activity of the hexanic extract and phloroglucinols from Hypericum brasiliense
Natural products are regarded as major and important sources of molecules used in chemotherapy. Hypericum brasiliense Choisy, Hypericaceae, is an annual bush, native in the southern and southeastern Brazil. This species has been used in Brazilian folk medicine the anti-spasmodic and for the treatment of infectious diseases. H. brasiliense is chemically compo
Rev. bras. farmacogn.. Publicado em: 2013-10
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7. Chemical constituents and leishmanicidal activity from leaves of Kielmeyera variabilis
Many phenolic compounds such as xanthones, quinones and coumarins have been isolated from Kielmeyera species; however the presence of flavonoids have been showed in other genera in the Calophylleae tribe as Caraipa, Mesua and Calophyllum. Six known glycosidic flavonoids: quercetin 3-β-O-galactopyranoside (1), quercetin 3-β-O-glucopyranoside (2), quercetin
Rev. bras. farmacogn.. Publicado em: 16/08/2012
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8. Antitumorigenicity of xanthones-rich extract from Garcinia mangostana fruit rinds on HCT 116 human colorectal carcinoma cells
This study aimed to investigate the antitumorigenicity of xanthones-rich extract from Garcinia mangostana L., Clusiaceae, fruit rinds which was obtained by a simple recrystallization of 75% ethanolic extract. α-Mangostin content of the extract was determined qualitatively by TLC and quantitatively by HPLC, and total xanthones content was quantified by UV sp
Revista Brasileira de Farmacognosia. Publicado em: 09/09/2011
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9. CONTRIBUTION TO THE PHARMACOGNOSTIC STUDY OF Polygala cyparissias Saint-Hilaire &Moquin (POLYGALACEAE): CHEMICAL ASPECTS AND EVALUATION OF THE GASTROPROTECTIVE AND ANTI-HYPERNOCICEPTIVE POTENTIAL / CONTRIBUIÇÃO AO ESTUDO FARMACOGNÓSTICO DE Polygala cyparissias Saint-Hilaire &Moquin (POLYGALACEAE): ASPECTOS QUÍMICOS E AVALIAÇÃO DE SEU POTENCIAL GASTROPROTETOR E ANTI-HIPERNOCICEPTIVO
Polygala cyparissias é uma planta popularmente conhecida como pinheiro da praia ou gelol. É etnofarmacologicamente utilizada como analgésico local de aplicação tópica, já tendo sido evidenciada a atividade antinociceptiva da planta. Caracterizase quimicamente pela presença de xantonas. Considerando que tais metabólitos já possuem atividade anti-úl
Publicado em: 2011
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10. Estudo biomonitorado para avaliação das atividades antiinflamatória e analgésica da folhas da espécie Protium spruceanum (Benth) Engler. (Burseraceae)
The aim of this work was to perform the bioactivity study of analgesic and antiinflammatory activities in vivo and antioxidant property in vitro of crude ethanolic extract (EEB) from Protium spruceanum leaves. Were used for phytochemical screening tests to detect the main classes of secondary metabolites presents in the EEB and chromatographic techniques for
Publicado em: 2010
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11. ESTUDO DAS ATIVIDADES ANTINOCICEPTIVA, ANTI-INFLAMATÓRIA E ANTIOXIDANTE DA SIDEROXYLON OBTUSIFOLIUM (SAPOTACEAE) / STUDY OF THE ANTINOCICEPTIVE, ANTI-INFLAMMATORY AND ANTIOXIDANT ACTIVITIES OF SIDEROXYLON OBTUSIFOLIUM (SAPOTACEAE).
Sideroxylon obtusifolium belongs to the family Sapotaceae. This study aimed to contribute to the scientific knowledge of the antinociceptive, anti-inflammatory and antioxidant properties of the steam bark of Sideroxylon obtusifolium (Roem. &Schult.) T.D. Penn, popularly known as quixabeira and used to treat pain and inflammation. The ethanol crude extract of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/12/2009
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12. Xantonas oxigenadas bioativas: cristalização, estrutura e suas interações intra e intermoleculares / Bioactive oxygenated xanthones: crystallization, structure and their intra- and intermolecular interactions
As xantonas compreendem uma importante classe de heterocíclicos moleculares que possuem um esqueleto dibenzo-gama-pironas, podendo estes serem obtidos tanto por meios sintéticos quanto naturais. Estes constituintes têm sido freqüentemente isolados de plantas medicinais brasileiras e vêm recebendo atenção devido a seus aspectos fitoquímicos e suas pro
Publicado em: 2009