Now showing items 1-10 of 39
Vernonia polyanthes as a new source of antiulcer drugs
(Fitoterapia, 2007-12-01) [Artigo]
Methanolic (VPME) and chloroformic (VPCL) extracts, obtained from the aerial parts of Vernonia polyanthes, were investigated for its antiulcerogenic properties. Administration of VPME (250 mg/kg) and VPCL (50 mg/kg) ...
Bioprospecção de atividade antioxidante e antimicrobiana da casca de Stryphnodendron adstringens (Mart.) Coville (Leguminosae-Mimosoidae)
(Revista de Ciências Farmacêuticas Básica e Aplicada, 2007-12-01) [Artigo]
The aim of this work was to evaluate the class of secondary metabolites responsible for the antioxidant and antimicrobial activities of bark extracts of Stryphnodendron adstringens (Mart.) Coville (Leguminosae-Mimosoidae), ...
A new antifungal phenolic glycoside derivative and iridoids and lignans from Alibertia sessilis (Vell.) K. Schum. (Rubiaceae)
(Journal of the Brazilian Chemical Society, 2007-12-17) [Artigo]
A new antifungal phenolic glycoside, 3,4,5-trimethoxyphenyl-1-O-β-D- (5-O-syringoyl)-apiofuranosyl-(1→6)-β-D-glucopyranoside (1), together with four known iridoids, geniposidic acid (2), geniposide (3), 6α-hydroxygeniposide ...
Clerodane diterpenes from leaves of Casearia sylvestris swartz
(Química Nova, 2007-09-01) [Artigo]
Ethanolic extracts of the leaves of Casearia sylvestris yielded a novel clerodane diterpene, 15-hydroxy-3-cleroden-2-one, together with the known diterpenes (-)-hardwickiic acid, reported for the first time from this ...
Chemistry and evolution of the Piperaceae
(Pure and Applied Chemistry, 2007-04-01) [Artigo]
The chemistry of members of the family Piperaceae is of great interest owing to the variety of biological properties displayed. A survey of structural diversity and bioactivity reveals that groups of species specialize in ...
Effects of erythrinian alkaloids isolated from Erythrina mulungu (Papilionaceae) in mice submitted to animal models of anxiety
(Biological & Pharmaceutical Bulletin, 2007-02-01) [Artigo]
The effects of acute oral administration of erythrinian alkaloids, Le. (+)-alpha-hydroxy-erysotrine, erythravine and (+)-11 alpha-hydroxy-erythravine isolated from the flowers of Erythrina mulungu were investigated in two ...
Bioactive flavone dimers from Ouratea multiflora (Ochnaceae)
(Revista Brasileira de Farmacognosia, 2007-09-01) [Artigo]
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 ...
Antioxidant activity of Agaricus blazei
(Fitoterapia, 2007-04-01) [Artigo]
The ethanolic extract of Agaricus blazei and ethyl acetate and hydroalcoholic fractions were evaluated for their antioxidant activity. (C) 2007 Elsevier B.V. All rights reserved.
Determination of benomyl residues in shiitake mushrooms (Lentinula edodes) by liquid chromatography with UV detection
(Journal of Chromatographic Science, 2007-07-01) [Artigo]
A new ent-kaurane diterpene from stems of Alibertia macrophylla K. Schum. (Rubiaceae)
(Helvetica Chimica Acta, 2007-10-11) [Artigo]
Phytochemical investigations of the stems of a specimen of Alibertia macrophylla led to the isolation and characterization of the new diterpene ent-kaurane-2β,3α,16α-triol (1), along with triterpenes 2-8, iridoids 9-12, ...