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Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Lipoxygenase inhibitors flavonoids from Cyperus rotundus aerial parts
ABSTRACT Cyperus rotundus L. (Suada, Sueda, family: Cyperaceae) is vastly spread in several world's subtropical and tropical regions. It had variable traditional uses and bioactivities. A new flavonol derivative: cyperaflavoside (myricetin 3,3',5'-trimethyl ether 7-O-β-D-glucopyranoside) and five flavonoids: vitexin, orientin, cinaroside, quercetin 3-O-β-D
Rev. bras. farmacogn.. Publicado em: 2018-06
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2. Simultaneous determination of six bioactive components of total flavonoids of Scorzonera austriaca in rat tissues by LC-MS/MS: application to a tissue distribution study
ABSTRACT A liquid chromatography-tandem mass spectrometry method was developed and validated for simultaneous determination of six bioactive constituents including vitexin, orientin, isoorientin, 2"-O-β-D-xylopyranosyl isoorientin, 2"-O-β-D-xylopyranosyl isovitexin, and 6-C-L-α-arabipyranosyl vitexin in rats’ various tissues using isoquercitrin as the i
Rev. bras. farmacogn.. Publicado em: 2018-04
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3. Comparative study of Passiflora taxa leaves: II. A chromatographic profile
ABSTRACT Popularly known as passion fruit, some species of the genus Passiflora are widely used in folk medicines, such as sedatives and tranquilizers in many countries. Although these plants are employed for the same purposes, research with different species of Passiflora has indicated their heterogeneous chemical compositions. Since different chemical comp
Rev. bras. farmacogn.. Publicado em: 2017-02
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4. CONSTITUINTES QUÍMICOS E ATIVIDADE ANTIOXIDANTE IN VIVO DE FLAVONOIDES ISOLADOS DE Clusia lanceolata (Clusiaceae)
The phytochemical investigation of Clusia lanceolata leaves yielded fourteen compounds including six flavones, vitexin, isovitexin, isovitexin-2"-O-α-L-rhamnopyranoside, vitexin-2"-O-α-L-rhamnopyranoside, orientin and isoorientin, two phaeophytins [132-hydroxy-(132-S-)-phaeophytin a and 132-hydroxy-(132-R)-phaeophytin a], two triterpenes, α- and β-amyrin
Quím. Nova. Publicado em: 2016-11
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5. In vivo diabetic wound healing effect and HPLC–DAD–ESI–MS/MS profiling of the methanol extracts of eight Aloe species
Abstract Genus Aloe, Xanthorrhoeaceae, is well distributed all over Egypt, and many species have been used as medicinal plants; mainly reported to prevent cardiovascular diseases, cancer and diabetes. This study attempts to analyze the secondary metabolites in the methanol extract of the leaves of eight Aloe species; A. vera (L.) Burm. f., A. arborescens Mil
Rev. bras. farmacogn.. Publicado em: 2016-06
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6. Flavonoids from leaves of Mauritia flexuosa
The chromatographic fractionation of the Mauritia flexuosa L. f., Arecaceae, leaves extract, a plant known by the name of buriti palm tree, resulted in the isolation of six flavonoids: tricin-7-O-rutinoside, apigenin-6-C-arabinoside, 8-C-glucoside (isoschaftoside), kaempferol-3-O-rutinoside (nicotiflorine), quercetin-3-O-rutinoside (rutin), luteolin-8-C
Rev. bras. farmacogn.. Publicado em: 13/09/2013
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7. Chemical study of the roots of Jatropha mollissima ( Pohl ) Baill; identification of phenolic compounds in four species of the genus Anthurium by Liquid Chromatography coupled to Mass Spectrometry. / Estudo QuÃmico da raiz de Jatropha mollissima (Pohl) Baill; identificaÃÃo de compostos fenÃlicos em quatro espÃcies do gÃnero Anthurium atravÃs de Cromatografia LÃquida acoplada à Espectrometria de Massas.
This work aimed to study the chemical from the root of Jatropha mollissima (Euphorbiaceae), a plant native to northeastern Brazil. In this study we used chromatographic techniques in an attempt to isolate the chemical constituents of hexane and ethanol extracts of the root. Chromatographic treatment of extract allowed the isolation of a long aliphatic chain
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2011
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8. Flavonas, lignanas e terpeno de Piper umbellata (Piperaceae)
The phytochemical investigation of Piper umbellata leaves yielded nine compounds including one terpenoid glucoside, five flavones (vitexin 2"-O-β-glucopyranoside, apigenin 8-C-β-D-glucopyranoside,orientin 8-C-β-D-glucopyranoside,5-hydroxy-7,3',4'-trimethoxy-flavone and velutin), two lignans (sesamin e dihydrocubebin) and 4-nerolidylcathecol. Excepting 4-n
Química Nova. Publicado em: 2009
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9. Flavonoids in Astragalus corniculatus
Nine flavonoids were identified in aerial parts of Astragalus corniculatus Bieb. (Fabaceae) by liquid chromatography coupled with ionspray mass spectrometry in the tandem mode (LC/MS/MS) with negative ion detection. Vitexin, orientin and eriodictyol-7-O-glucoside are obtained for the first time in genus Astragalus L, and isorhamnetin-3-O-glucoside in the spe
Química Nova. Publicado em: 2008
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10. Phytochemical study of Gypsophila trichotoma wend. (Caryophyllaceae)
Phytochemical studies of ethyl acetate extracts from the roots and aerial parts of Gypsophila trichotoma revealed the presence of stigmast-7-en-3-ol, stigmasta-7,22-dien-3-ol (spinasterol), ergost-7-en-3-ol, stigmasta-3,5dien7-one, β-sitosterol, 22,23-dihydrospinasterone, vitexin, orientin, homoorientin and hyperoside. The structures of the compounds were d
Química Nova. Publicado em: 2008
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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. ANALYSIS OF ANTIMICROBIAL POTENTIAL OF EXTRACT, FRACTIONS AND PURE COMPOUNDS OBTAINED FROM Piper solmsianum C. DC. VAR. solmsianum (PIPERACEAE). / ANÁLISE DO POTENCIAL ANTIMICROBIANO DE EXTRATO, FRAÇÕES E SUBSTÂNCIAS PURAS OBTIDAS DE Piper solmsianum C.D.C. VAR. solmsianum (PIPERACEAE)
The species Piper solmsianum belong to the family Piperaceae, which is comprised of about 700 species, and is widely distributed in the tropical and subtropical zones of world. The chemical of P. solmsianum has not been fully investigated, and there are few studies relating to its bilogical activities. This work evaluated the antimicrobial properties of the
Publicado em: 2006