Zobrazeno 1 - 9 of 9 pro vyhledávání: '"André L. B. S. Barreiros"'
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Synthesis of chalcone derivatives by Claisen-Schmidt condensation and in vitro analyses of their antiprotozoal activities
Autor: Gabriella B. Souza, Tamiris A. C. Santos, Amanda P. S. Silva, André L. B. S Barreiros, Victória Brandão Nardelli, Ingrid B. Siqueira, Silvio S. Dolabella, Emmanoel.V. Costa, Péricles B. Alves, Ricardo Scher, Roberta P. M. Fernandes
Publikováno v: Natural Product Research. :1-8
Chalcone is a molecule with known biological activities. Based on this, a series of chalcone derivatives bearing methyl, phenyl or furanyl substituents at different positions of A and B rings were synthesised, characterised, and evaluated regarding a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c4aece766d02ec7303bfd8275c6b1b3
https://doi.org/10.1080/14786419.2022.2140337
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3
Synthesis and Evaluation of Cytotoxic Effects of Amino-ester Derivatives of Natural α,β-Amyrin Mixture
Autor: Jorge Mauricio David, Manoel Odorico de Moraes, Claudia Pessoa, Mauricio M. Victor, Fernanda S. Andrade, Maria Claudia dos Santos Luciano, Francisco Washington Araújo Barros-Nepomuceno, André L. B. S. Barreiros, Marcelo Santos, Marizeth L. Barreiros, Adriana Andrade Carvalho
Publikováno v: Journal of the Brazilian Chemical Society.
Natural α,β-amyrins were isolated from endemic Brazilian Esenbeckia grandiflora Mart., and eight synthetic derivatives were obtained by esterification reactions with bromo acetate, followed by amine treatment. The structures of the all compounds we
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::837eaad58f0e39a9762e5cfe64dda172
https://doi.org/10.21577/0103-5053.20170064
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4
In Vitro Effects of Arylhydrocoumarin on Free Radicals and Oxidative Stress in Erythrocytes and Saccharomyces cerevisiae
Autor: Rivelilson Mendes de Freitas, Jorge Mauricio David, André L. B. S. Barreiros, Clayton Q. Alves, George Laylson da Silva Oliveira, Juceni P. David, Rizangela L.M. de Freitas, Charleston R. Pinto
Publikováno v: Current Pharmaceutical Biotechnology. 15:1069-1082
Neoflavonoids comprise a group of natural compounds with varied chemical structures and promising pharmacological properties, including antioxidant capacity. This work describes an evaluation of the in vitro antioxidant capacity of a new coumarin der
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d09e7528c9b4372a72479926288e462
https://doi.org/10.2174/1389201015666141110141714
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5
Estresse oxidativo: relação entre geração de espécies reativas e defesa do organismo
Autor: Jorge Mauricio David, Juceni P. David, André L. B. S. Barreiros
Publikováno v: Química Nova, Vol 29, Iss 1, Pp 113-123 (2006)
Química Nova v.29 n.1 2006
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
This work describes the mechanism of action of some reactive oxygen species (ROS) and reactive nitrogen species (RNS) in the oxidative stress of the human body, and their consequences on damage to DNA, RNA, proteins and lipids. It also illustrates th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2ca632b17380656716e9216dd25cc7f6
https://doi.org/10.1590/s0100-40422006000100021
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6
Atividade antioxidante de substâncias presentes em Dioclea violacea e Erythroxylum nummularia
Autor: Juceni P. David, L. P. de Queiroz, Marizeth L. Barreiros, André L. B. S. Barreiros, Jorge Mauricio David
Publikováno v: Revista Brasileira de Farmacognosia, Volume: 13 Supplement 2, Pages: 11-8, Published: 2003
Revista Brasileira de Farmacognosia v.13 suppl.2 2003
Revista Brasileira de Farmacognosia
Sociedade Brasileira de Farmacognosia (SBFgnosia)
instacron:SBFGNOSIA
Revista Brasileira de Farmacognosia, Vol 13, Iss suppl 2, Pp 8-11
This work describes the evaluation of the antioxidant activity in the system b-carotene / linoleic acid and radical scavenging effects of the substances 2',4'-dihydroxychalcone, 2',3,4,4'-tetrahydroxychalcone (butein), 4-methoxy-2',3,4'-trihydroxycha
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c35284f9b541e9410c264055156f0d2f
https://doi.org/10.1590/s0102-695x2003000400004
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7
Antioxidant Phenylpropanoid Esters of Triterpenes fromDioclea lasiophylla
Autor: Juceni P. David, André L. B. S. Barreiros, Jorge Mauricio David
Publikováno v: Pharmaceutical Biology. 42:36-38
The chloroform extract of steams of Dioclea lasiophylla furnished a new compound, namely, 3β-E-feruloyl oleanolic acid, in addition to 3β-E-caffeoyl oleanolic, betulinic and oleanolic acids, vanillin, methyl vanillate, pinoresinol and syringaresino
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42d11028fc4b6896bd863523d214432d
https://doi.org/10.1080/13880200490505447
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8
Atividade antioxidante da epicatequina-(2β→7,4β→8)-epicatequina isolada de Dioclea lasiophylla
Autor: André L. B. S. Barreiros, Juceni P. David, Jorge Mauricio David, Edlene O. dos Santos, Ihanmarck Damasceno dos Santos, Maria da Pureza Spínola Miranda
Publikováno v: Revista Brasileira de Farmacognosia v.12 suppl.1 2002
Revista Brasileira de Farmacognosia
Sociedade Brasileira de Farmacognosia (SBFgnosia)
instacron:SBFGNOSIA
Revista Brasileira de Farmacognosia, Vol 12, Iss suppl 1, Pp 5-6
Revista Brasileira de Farmacognosia, Volume: 12 Supplement 1, Pages: 5-6, Published: 2002
This work describes the evaluation of the antioxidant activity in the system b-carotene / linoleic acid and radical scavenging effects of the substances epicatechin-(2β→7,4β→8)-epicatechin, epicatechin, epigalocatechin-(2β→7,4β→8)-epicate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1081f95b729b9d3b248af9a1ac95a199
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-695X2002000300003
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9
A-type proanthocyanidin antioxidant from Dioclea lasiophylla
Autor: Juceni P. David, Jorge Mauricio David, André L. B. S. Barreiros, Luciano Paganucci de Queiroz
Publikováno v: Phytochemistry. 55(7)
The A-type proanthocyanidin, epigallocatechin-(2β→7,4β→8)-epicatechin, together with the known epicatechin, luteolin 3′β- d -glucopyranoside, chrysoeriol 7β- d -glucopyranoside and 2-methylpentan-2,4-diol, were isolated from leaves of Diocl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9169c8e52e861b82d7e0094535511c22
https://pubmed.ncbi.nlm.nih.gov/11190400
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