Isovitexin
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. 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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2. Zornioside, a dihydrochalcone C-glycoside, and other compounds from Zornia brasiliensis
ABSTRACT The secondary metabolites of the aerial parts of Zornia brasiliensis Vogel, Fabaceae, and the biological activity of one of these secondary metabolites were characterized in this study. A phytochemical investigation was performed using chromatographic techniques including analytical and preparative reverse-phase HPLC column sequences, which resulted
Rev. bras. farmacogn.. Publicado em: 2018-04
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3. Isovitexin as marker and bioactive compound in the antinociceptive activity of the Brazilian crude drug extracts of Echinodorus scaber and E. grandiflorus
Abstract Echinodorus scaber Rataj and Echinodorus grandiflorus (Cham. & Schltdl.) Micheli, Alismataceae, are popularly used to relieve inflammatory complaints and as diuretic. A study on the antinociceptive effect and selected marker compounds in eleven extracts from different locations was undertaken and their antinociceptive effect was assessed. The finger
Rev. bras. farmacogn.. Publicado em: 2017-10
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4. Increased antioxidant activity and polyphenol metabolites in methyl jasmonate treated mung bean (Vigna radiata) sprouts
Abstract Mung bean sprouts are a popular health food both in China and worldwide. We determined the optimal concentration of exogenous methyl jasmonate (MeJA) for the promotion of the sprouting in mung beans (Vigna radiata). The 1,1-diphenyl-2- picrylhydrazyl radical (DPPH) scavenging test showed that MeJA application resulted in significantly improved antio
Food Sci. Technol. Publicado em: 11/05/2017
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5. Rapid identification and quantitative analysis of chemical constituents of Gentiana veitchiorum by UHPLC-PDA-QTOF-MS
ABSTRACT Gentiana veitchiorum Hemsl., Gentianaceae, a traditional Tibetan medicine, was used for the treatment of liver jaundice with damp-heat pathogen, as well as for headache and chronic pharyngitis. A rapid ultra-performance liquid chromatography, photodiode array detector, quadrupole time-of-flight mass spectrometry method was developed for the fast and
Rev. bras. farmacogn.. Publicado em: 2017-04
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6. 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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7. A cytotoxic C-glycosylated derivative of apigenin from the leaves of Ocimum basilicum var. thyrsiflorum
ABSTRACT The standardized 80% ethanolic extract of the leaves of Ocimum basilicum var. thyrsiflorum (L.) Benth., Lamiaceae, growing in KSA, exhibited a significant antioxidant activity compared to the ethyl acetate and butanol extracts, which was correlated to its higher phenolic and flavonoid contents. Chromatographic separation of the 80% ethanol extract r
Rev. bras. farmacogn.. Publicado em: 2016-12
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8. 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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9. Genotoxicity and acute and subchronic toxicity studies of a standardized methanolic extract of Ficus deltoidea leaves
OBJECTIVE: Ficus deltoidea leaves have been used in traditional medicine in Southeast Asia to treat diabetes, inflammation, diarrhea, and infections. The present study was conducted to assess the genotoxicity and acute and subchronic toxicity of a standardized methanol extract of F. deltoidea leaves. METHODS: Sprague Dawley rats were orally treated with
Clinics. Publicado em: 2013-06
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10. Identificação de flavonoides, quantificação de isovitexina e avaliação das atividades antioxidante e fotoprotetora in vitro dos extratos metanólico e glicólico de Passiflora coccinea (Aubl.) / Identification of flavonoids, quantification of isovitexin and evaluation of antioxidant and photoprotective in vitro activities of methanolic and glycolic Passiflora coccinea (Aubl.) extracts
As espécies do gênero Passiflora são ricas em flavonoides, que apresentam atividade antioxidante e, por isso, têm potencial para uso em formulações que combatam o envelhecimento extrínseco da pele. Esse envelhecimento está ligado à formação de espécies reativas de oxigênio pela absorção da radiação ultravioleta. Neste contexto, formulações
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/05/2012
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11. 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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12. 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