Now showing items 1-10 of 155
In vitro cytotoxicity of some natural and semi-synthetic isocoumarins from Paepalanthus bromelioides
(Zeitschrift fur Naturforschung - Section C Journal of Biosciences, 2002-01-01) [Artigo]
Numerous natural compounds have a potential for therapeutic applications, but may have to be chemically modified to alter toxic side effects. We investigated structural parameters that could affect the cytotoxicity of ...
Lichen metabolites modulate hydrogen peroxide and nitric oxide in mouse macrophages
(Zeitschrift fur Naturforschung - Section C Journal of Biosciences, 2009-11-20) [Artigo]
The activities of perlatolic acid (1), atranorin (2), and lecanoric acid (3) and their derivatives, such as orsellinates and β-methyl orsellinates obtained by alcoholysis, were assessed for stimulation of the release of ...
Characterization and Quantification of the Compounds of the Ethanolic Extract from Caesalpinia ferrea Stem Bark and Evaluation of Their Mutagenic Activity
(Molecules, 2014-10-01) [Artigo]
Caesalpinia ferrea Martius has traditionally been used in Brazil for many medicinal purposes, such as the treatment of bronchitis, diabetes and wounds. Despite its use as a medicinal plant, there is still no data regarding ...
Isolated flavonoids against mammary tumour cells LM2
(Zeitschrift fur Naturforschung - Section C Journal of Biosciences, 2009-03-24) [Artigo]
The purpose of the present study was to investigate antitumour and anti-inflammatory activities of flavonoids isolated from Byrsonima crassa, Davilla elliptica and Mouriri pusa. The antitumour activity was measured by the ...
Xeractinol - A new flavanonol C-glucoside from Paepalanthus argenteus var. argenteus (Bongard) Hensold (Eriocaulaceae)
(Journal of the Brazilian Chemical Society, 2007-01-01) [Artigo]
New compound isolated from methanolic extract from the leaves of Paepalanthus argenteus var. argenteus (Bongard) Hensold was characterized as xeractinol, a new dihydroflavonol C-glucoside. The structure was elucidated on ...
Effects of limonene and essential oil from Citrus aurantium on gastric mucosa: Role of prostaglandins and gastric mucus secretion
(Chemico-biological Interactions, 2009-08-14) [Artigo]
Essential oil from Citrus aurantium and the monoterpene limonene are widely used flavoring agents that are found in some common food items. This specie is also used medicinally throughout the world to treat gastritis and ...
Evaluation of Estrogenic Potential of Flavonoids Using a Recombinant Yeast Strain and MCF7/BUS Cell Proliferation Assay
(PLOS ONE, 2013-10-01) [Artigo]
Phytoestrogens are of interest because of their reported beneficial effects on many human maladies including cancer, neurodegeneration, cardiovascular disease and diabetes. Furthermore, there is a search for compounds with ...
Arbutin-2 '-sulphonyl from the infusion of Ilex theezans leaves
(Fitoterapia, 2004-12-01) [Artigo]
A sulphate arbutin derivative was isolated from the leaves of flex theezans, an adulterant of mate (flex paraguariensis). The structure was determined by spectral analysis. (C) 2004 Published by Elsevier B.V.
Constituents of Cassia rugosa
(Fitoterapia, 1993-01-01) [Artigo]
Composition of the volatile compounds from Aniba canelilla (H. B. K.) Mez. extracted by CO2 in the supercritical state
(Revista Brasileira de Farmacognosia, 1998-01-01) [Artigo]
Os constituintes químicos voláteis das cascas de Aniba canelilla (H. B. K.) Mez. (Lauraceae), obtidos por SFE-CO2 (extração com fluido supercrítico utilizando CO2), foram analisados por HRGC-FID (cromatografia gasosa de ...