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| Macari,Patrícia de Almeida Telles; Portela,Cíntia Nicácio; Pohlit,Adrian Martin. |
| Maytenus guyanensis Klotzch. is an Amazonian medicinal tree species known in Brazil by the common name chichuá and in Peru and Colombia by the name chuchuhuasi. It is used in traditional medicine as stimulant, tonic, and muscle relaxant, for the relief of arthritis, rheumatism, hemorrhoids, swollen kidney, skin eruptions, and skin cancer prevention, among others. Initially, different extraction solvents and methods were applied to dried, ground bark which made possible the preparation of extracts having both significant lethality to brine shrimp larvae (Artemia franciscana Leach) as well as antioxidant activity in vitro based on tests involving reactions with 2,2,-diphenyl-1-picrylhydrazyl (DPPH). Analysis of fractions from serial extractions with solvents... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brine shrimp assay Artemia franciscana Leach 2; 2'-diphenyl-1-picrylhydrazyl DPPH beta-carotene. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000400012 |
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| Morais,Sabrina Kelly Reis de; Silva,Suniá Gomes; Portela,Cíntia Nicácio; Nunomura,Sergio Massayoshi; Quignard,Etienne Louis Jacques; Pohlit,Adrian Martin. |
| Tabebuia incana A.H. Gentry (Bignoniaceae) is a tree from the Brazilian Amazon having medicinal uses and is one several Tabebuia spp. known as pau d'arco or palo de arco in this region. Fractionation of the bark ethanolic extract afforded a mixture of 5 and 8-hydroxy-2-(1-hydroxyethyl)naphtho[2,3-b]furan-4,9-diones (1 and 2, respectively) identified on the basis of nuclear magnetic resonance (NMR), infrared (IR) and mass (MS) spectra, whose in vitro antimalarial and antitumor activity have been shown previously. This is the first study on T. incana bark, and 2 are described in this species for the first time. Also, high performance liquid chromatography (HPLC) analysis of T. incana bark tea revealed the presence of the 1 + 2 mixture peak corresponding to a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artemia franciscana Leach 5-hydroxy-2-(1-hydroxyethyl)naphtho[2; 3-b]furan-4; 9-dione; 8-hydroxy-2-(1-hydroxyethyl)naphtho[2; 3-b]furan-4; 9-dione. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000100011 |
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