Search Results - "Maltha, Célia Regina Álvares"

Rubrolide analogues as urease inhibitors by Varejão, Jodieh Oliveira Santana, Barbosa, Luiz Cláudio Almeida, Varejão, Eduardo Vinícius Vieira, Coreas, Nidia Magally Galdámez, Morais, Vinicius Stefano Santos, de Oliveira, André Mauricio, Barcelos, Rosimeire Coura, Maltha, Célia Regina Álvares, Modolo, Luzia Valentina

“…Urease is an important virulence factor involved in the colonization and infection of gastric mucosa by Helicobacter pylori . In this work, the urease…”
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Síntese e avaliação da atividade antimalárica de novos ozonídeos by BARBOSA, Luiz Cláudio de Almeida, MALTHA, Célia Regina Álvares, ALVARENGA, Elson Santiago

“…A reação de cicloadição [3+4] entre diferentes dienos (ciclopentadieno, 2-metilfurano e furano) e halocetonas levou aos cicloadutos correspondentes, cuja…”
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Evaluation of the chemical composition of Brazilian commercial Cymbopogon citratus (D.C.) stapf samples by Barbosa, Luiz Cláudio Almeida, Pereira, Ulisses Alves, Martinazzo, Ana Paula, Maltha, Célia Regina Alvares, Teixeira, Róbson Ricardo, Melo, Evandro de Castro

“…The concentration and the chemical composition of the essential oils obtained from different samples of Cymbopogon citratus were evaluated. Among the 12…”
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Synthesis and biological evaluation of 2,5-bis(alkylamino)-1,4-benzoquinones by Barbosa, Luiz Cláudio Almeida, Pereira, Ulisses Alves, Maltha, Célia Regina Alvares, Teixeira, Róbson Ricardo, Moreira Valente, Vânia Maria, Oliveira Ferreira, José Roberto, Costa-Lotufo, Letícia Veras, Moraes, Manoel Odorico, Pessoa, Cláudia

“…A series of twelve 2,5-bis(alkylamino)-1,4-benzoquinones were prepared in yields ranging from 9-58% via the reaction between p-benzoquinone and various amines…”
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A facile one-pot synthesis of 2-(2-pyridyl)quinolines via Povarov reaction by Borel, Carmindo Ribeiro, Barbosa, Luiz Claudio Almeida, Maltha, Célia Regina Álvares, Fernandes, Sergio Antonio

“…•An efficient synthesis of 2-(2-pyridyl)quinolines was achieved via the Povarov reaction.•Pyridine carbaldehydes are converted in one step into quinoline…”
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Synthesis and phytogrowth properties of oxabicyclic analogues related to helminthosporin by Barbosa, Luiz Cláudio Almeida, Nogueira, Leonardo Brandão, Maltha, Célia Regina Alvares, Teixeira, Róbson Ricardo, Silva, Antônio Alberto

“…This investigation describes the synthesis and biological evaluation of a series of oxabicyclic analogues related to the helminthosporins. Four oxabicycles…”
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Natural Abenquines and Their Synthetic Analogues Exert Algicidal Activity against Bloom-Forming Cyanobacteria by Nain-Perez, Amalyn, Barbosa, Luiz Cláudio Almeida, Maltha, Célia Regina Álvares, Forlani, Giuseppe

“…Abenquines are natural quinones, produced by some Streptomycetes, showing the ability to inhibit cyanobacterial growth in the 1 to 100 μM range. To further…”
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Seasonal variation in the chemical composition and antimicrobial activity of volatile oils of three species of Leptospermum (Myrtaceae) grown in Brazil by Demuner, Antonio Jacinto, Barbosa, Luiz Claudio Almeida, Magalhaes, Cassia Gonçalves, da Silva, Cleber Jose, Maltha, Celia Regina Alvares, Pinheiro, Antonio Lelis

“…This study investigates the seasonal variation of three species of Leptospermum (Myrtaceae) grown in Brazil. The chemical composition of the volatile oils of…”
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Síntese de novos herbicidas derivados do 1,2alfa,4alfa,5-tetrametil-8-oxabiciclo[3.2.1]oct-6-en-3-ona by Barbosa, Luiz Cláudio de Almeida, Maltha, Célia Regina Álvares, Demuner, Antônio Jacinto, Filomeno, Claudinei Andrade, Silva, Antônio Alberto da

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Síntese e avaliação da atividade fitotóxica de novos análogos oxigenados do ácido helmintospórico by Barbosa, Luiz Cláudio de Almeida, Demuner, Antônio Jacinto, Maltha, Célia Regina Álvares, Silva, Patrícia Silvana da, Silva, Antônio Alberto da

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Síntese e avaliação da atividade fitotóxica de lactonas derivadas do 2,4-dimetil-8-oxabiciclo[3.2.1]-oct-6-en-3-ona by Barbosa, Luiz Cláudio de Almeida, Maltha, Célia Regina Álvares, Borges, Eduardo Euclides Lima

“…The alkene 2,4-dimethyl-8-oxabicyclo[3.2.1]-oct-6-en-3-one (3) was converted to 1,3,10-trimethyl-8-oxabicyclo[5.3.0]-dec-3-ene-2,9-dione (7) and…”
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Synthesis and cytotoxic activity of some 3-benzyl-5-arylidenefuran-2(5H)-ones by Teixeira, Róbson Ricardo, Barbosa, Luiz Cláudio, Maltha, Célia Regina Alvares, Rocha, Marcelo Eça, Bezerra, Daniel Pereira, Costa-Lotuf, Letícia Veras, Pessoa, Cláudia, Moraes, Manoel Odorico

“…3-Benzyl-furan-2(5H)-one (2a) and 3-(4-bromobenzyl)-furan-2(5H)-one (2b) were treated with TBDMSOTf and converted into the corresponding…”
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A comparative study on the crystal structure of bicycle analogues to the natural phytotoxin helminthosporins by Barbosa, Luiz Cláudio de Almeida, Teixeira, Robson Ricardo, Nogueira, Leonardo Brandão, Maltha, Celia Regina Alvares, Doriguetto, Antônio Carlos, Martins, Felipe Terra

“…Herein we described structural insights of a series of analogues to helminthosporin phytotoxins. The key reaction used to prepare the compounds corresponded to…”
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Estratégias para a síntese de γ-alquilidenobutenolídeos by Barbosa, Luiz Cláudio Almeida, Teixeira, Róbson Ricardo, Pinheiro, Patrícia Fontes, Maltha, Célia Regina Álvares, Demuner, Antônio Jacinto

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Estratégias para a síntese de γ-alquilidenobutenolídeos Strategies for the synthesis of γ-alkilidenebutenolides by Luiz Cláudio Almeida Barbosa, Róbson Ricardo Teixeira, Patrícia Fontes Pinheiro, Célia Regina Álvares Maltha, Antônio Jacinto Demuner

“…α,β-unsaturated lactones possessing an alkylidene appendage group at the γ-position, are frequently termed γ-alkylidenebutenolides. Over the past decades, an…”
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Induction of G2/M arrest, caspase activation and apoptosis by α-santonin derivatives in HL-60 cells by Ferreira, José Roberto Oliveira, Cavalcanti, Bruno Coêlho, da Costa, Patricia Marçal, de Arantes, Francisco Frederico Perlinson, de Alvarenga, Elson Santiago, Maltha, Célia Regina Alvares, de Almeida Barbosa, Luiz Cláudio, Militão, Gardenia Carmen Gadelha, Pessoa, Claúdia, Ferreira, Paulo Michel Pinheiro

“…•Santonin derivatives reduced HL-60 cell proliferation.•Derivatives caused phosphatidylserine externalization and caspase triggering.•Extrinsic apoptotic…”
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Synthesis of 6α,7β-Di-Hydroxyvouacapan-17β-Oic acid derivatives part III: synthesis, ¹H- and 13C-NMR of amide derivatives by Maltha, Célia Regina Álvares, Stefani, Guglielmo Marconi, Piló-Veloso, Dorila, Ferreira-Alves, Dalton Luiz

“…Seven new amide (III-IX) derivatives of 6α,7β-di-hydroxyvouacapan-17β-oic acid I (ADV) have been synthesized. Their structures were established by…”
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The Synthesis of 6α,7β-Dihydroxyvouacapan-17β-oic Acid Derivates. Part II: Carbamate and Amine Derivatives by Maltha, Célia Regina Álvares, Stefani, Guglielmo Marconi, Piló-Veloso, Dorila

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Synthesis of 6α,7β-Di-Hydroxyvouacapan-17β-Oic acid derivatives part III: synthesis, 1H- and 13C-NMR of amide derivatives1 by Maltha, Célia Regina Álvares, Stefani, Guglielmo Marconi, Piló-Veloso, Dorila, Ferreira-Alves, Dalton Luiz

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Síntese e avaliação da atividade antimalárica de novos ozonídeos by Barbosa, Luiz Cláudio de Almeida, Maltha, Célia Regina Álvares, Alvarenga, Elson Santiago

“…A reação de cicloadição [3+4] entre diferentes dienos (ciclopentadieno, 2-metilfurano e furano) e halocetonas levou aos cicloadutos correspondentes, cuja…”
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