Amentoflavone
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. In vitro Antioxidant and Anticholinesterase Activities of Ouratea fieldingiana (Gardner) Eng. Leaf Extract and Correlation with Its Phenolics Profile with an in silico Study in Relation to Alzheimer’s Disease
Ouratea fieldingiana is a native medicinal plant from Northeastern Brazil and many biological properties are due to the phenolic constituents. The objective of this work was performing the characterization of O. fieldingiana leaf constituents to correlate with antioxidant and anticholinesterase activities by in vitro and in silico studies and thus contribute
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Circulação Extracorpórea na Cirurgia de Revascularização do Miocárdio no Estado de São Paulo. O Estudo REPLICCAR
The objective of this work was to carry out a bibliographic survey of secondary metabolites isolated from the Velloziaceae family, creating a bank of compounds. After the bank was created, four prediction models for potentially active compounds against pathogenic microorganisms (Candida albicans, Escherichia coli, Pseudomonas aeruginosa and Salmonella sp.) w
Arq. Bras. Cardiol.. Publicado em: 2020-10
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3. Virtual Screening of Secondary Metabolites of the Family Velloziaceae J. Agardh with Potential Antimicrobial Activity
The objective of this work was to carry out a bibliographic survey of secondary metabolites isolated from the Velloziaceae family, creating a bank of compounds. After the bank was created, four prediction models for potentially active compounds against pathogenic microorganisms (Candida albicans, Escherichia coli, Pseudomonas aeruginosa and Salmonella sp.) w
J. Braz. Chem. Soc.. Publicado em: 2020-10
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4. COMPOSIÇÃO QUÍMICA, ATIVIDADE ANTIRADICALAR E ANTIMICROBIANA DO PÓLEN APÍCOLA DE FABACEAE
The aim of this investigation was to analyze two samples of pollen collected by Apis mellifera bees in view of their chemical composition, antiradicalar and antimicrobial activities. Palynological analysis showed that the predominant pollen was Fabaceae species (42.3%, sample I and 50.6%, sample II). The characterization by ultra-performance liquid chromatog
Quím. Nova. Publicado em: 2019-01
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5. In vitro activity of the hydroethanolic extract and biflavonoids isolated from Selaginella sellowii on Leishmania (Leishmania) amazonensis
This study is the first phytochemical investigation of Selaginella sellowii and demonstrates the antileishmanial activity of the hydroethanolic extract from this plant (SSHE), as well as of the biflavonoids amentoflavone and robustaflavone, isolated from this species. The effects of these substances were evaluated on intracellular amastigotes of Leishmania (
Mem. Inst. Oswaldo Cruz. Publicado em: 2014-12
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6. Anti-Mycobacterium tuberculosis activity and cytotoxicity of Calophyllum brasiliense Cambess (Clusiaceae)
We evaluated the in vitro anti-Mycobacterium tuberculosis activity and the cytotoxicity of dichloromethane extract and pure compounds from the leaves of Calophyllum brasiliense. Purification of the dichloromethane extract yielded the pure compounds (-) mammea A/BB (1), (-) mammea B/BB (2) and amentoflavone (3). The compound structures were elucidated on the
Mem. Inst. Oswaldo Cruz. Publicado em: 04/03/2014
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7. Changes in the content of bioactive substances among Hypericum montbretii populations from Turkey
In the present study, we investigated the variation in the content of seventeen secondary metabolites among Hypericum montbretii Spach., Hypericaceae, populations from five different growing zones in Turkey for the first time.The plants were collected at full flowering, and after they were dried at room temperature, they were assayed for chemical contents by
Rev. bras. farmacogn.. Publicado em: 2014-01
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8. Occurrence of biflavones in leaves of Caesalpinia pyramidalis specimens
The chloroform partition of methanol extract of leaves of Caesalpinia pyramidalis was submitted to different chromatographic procedures which afforded besides agathisflavone and taxifolin, the minor biflavones loniflavone, amentoflavone, 5'- hydroxyamentoflavone and podocarpusflavone A. The structures of the compounds were established on the basis of NMR and
Química Nova. Publicado em: 2010
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9. Trypanocidal constituents in plants: 7. Mammea-type coumarins
Calophyllum brasiliense and Mammea americana (Clusiaceae) are two trees from the tropical rain forests of the American continent. A previous screening showed high trypanocidal activity in the extracts of these species. Several mammea-type coumarins, triterpenoids and biflavonoids were isolated from the leaves of C. brasiliense. Mammea A/AA was obtained from
Memórias do Instituto Oswaldo Cruz. Publicado em: 2008-08
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10. Dímeros flavônicos bioativos de Ouratea multiflora (Ochnaceae)
Chromatographic fractionation of the organic extract from leaves of Ouratea multiflora afforded the flavone dimers heveaflavone, amentoflavone-7¢¢,4¢¢¢-dimethyl eter, podocarpusflavone-A and amentoflavone. Their structures were elucidated from spectral data, including 2D-NMR experiments of the natural su
Revista Brasileira de Farmacognosia. Publicado em: 2007-09
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11. Considerações sobre os gêneros Ouratea e Luxemburgia, estudo químico de duas espécies de Ochnceae: Ouratea hexasperma St. Hil e Ouratea cuspidata St. Hil e atividades biológicas
Besides the considerations concerning the flavonoidic biodiversity of Ouratea and Luxemburgia genera, the chemical study of two Ouratea (Ochnaceae) species was achieved. O. cuspidata, collected in the beach ridge of Barra de Maricá township, RJ and O. hexaseperma, collected in tabuleiro region, João Pessoa township, PB, Brazil. The described substances in
Publicado em: 2007
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12. Análise química e avaliação da atividade antiviral de hypericum connatum lam. / Chemical analysis and evaluation of the antiviral activity of Hypericum connatum Lam
Plantas da família Guttiferae apresentam diversas atividades biológicas sendo Hypericum o gênero mais importante devido às atividades antidepressiva, antibacteriana e antiviral de algumas espécies. Hypericum connatum, utilizado no sul do Brasil para o tratamento de feridas de boca, demonstrou atividade contra o lentivírus, responsável pela imunodefici
Publicado em: 2007