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Browsing Artigos by Title

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  • Costa, Deyse G.; Capaz, Rodrigo B.; Henrique, Fábio J. F. S.; Oliveira, Felipe L.; Esteves, Pierre M. (Carbon, 2018-09)
    A new family of carbon allotropes, called n-diamondynes, is proposed based on the insertion of acetylide units between the sp3-hybridized carbon atoms of diamond. We perform density-functional theory calculations in order ...
  • Nain-Perez, Amalyn; Barbosa, Luiz C.A.; Rodríguez-Hernández, Diego; Kramell, Annemarie E.; Heller, Lucie; Csuk, René (Bioorganic & Medicinal Chemistry Letters, 17-01-28)
    In this study, we explore the cytotoxic activity of four natural abenquines (2a–d) and fourteen synthetic analogues (2e–j and 3a–h) against a panel of six human cancer cell lines using a SRB assay. It was found that most ...
  • Santos, Marcelo H. dos; Santos, Jorge A. N.; Kondo, Márcia Y.; Freitas, Renato F.; Ramalho, Teodorico C.; Assis, Diego M.; Juliano, Luiz; Juliano, Maria A.; Puzer, Luciano (Bioorganic & Medicinal Chemistry Letters, 2016-03-01)
    The human tissue kallikreins (KLK1–KLK15) comprise a family of 15 serine peptidases detected in almost every tissue of the human body and that actively participate in many physiological and pathological events. Some ...
  • Santos, Marcelo H.; Lage, Mateus R.; Morbec, Juliana M.; Carneiro, José Walkimar de M.; Costa, Luciano T. (Journal of Molecular Modeling, 2017-03-30)
    The quantum theory of atoms in molecules (QTAIM) and density functional theory (DFT) calculations were employed to investigate the structure and tautomeric equilibrium of epiclusianone, a polyisoprenylated benzophenone ...
  • Teixeira, Róbson Ricardo; Ricardo, Róbson; Oliveira, Ana Flávia Costa da Silveira; Silva, Adalberto Manoel da; Oliveira, André Silva de; Silva, Milene Lopes da; Silva, Cynthia Cânedo da; Paula, Sérgio Oliveira de (Molecules, 2014-06-17)
    Dengue is a neglected disease responsible for 22,000 deaths each year in areas where it is endemic. To date, there is no clinically approved dengue vaccine or antiviral for human beings, even though there have been great ...
  • Varejão, Jodieh O.S.; Barbosa, Luiz C.A.; Ramos, Gabriela Álvarez; Varejão, Eduardo V.V.; King-Díaz, Beatriz; Lotina-Hennsen, Blas (Journal of Photochemistry and Photobiology B:, 2015-03-01)
    Natural products called rubrolides have been investigated as a model for the development of new herbi- cides that act on the photosynthesis apparatus. This study comprises a comprehensive analysis of the photosynthesis ...
  • Andrade, Carlos Eduardo O.; Oliveira, André F.; Neves, Antônio A.; Queiroz, Maria Eliana L.R. (Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2016-06-06)
    EDTA is an important ligand used in many industrial products as well as in agriculture, where it is employed to assist in phytoextraction procedures and the absorption of nutrients by plants. Due to its intensive use and ...
  • Sato, André G.; Silva, Gabriel C.D.; Paganin, Valdecir A.; Biancolli, Ana L.G.; Ticianelli, Edson A. (Journal of Power Sources, 2015-10-30)
    Although ethanol can be directly employed as fuel on polymer-electrolyte fuel cells (PEMFC), its low oxidation kinetics in the anode and the crossover to the cathode lead to a substantial reduction of energy conversion ...
  • Vidigal, Antonio E. C.; Rubinger, Mayura M. M.; Queiroz, Luan F. de; Silva, Lucas F. da; Zambolim, Laércio; Guilardi, Silvana; Souza, Rafael A. C.; Ellena, Javier; Wetler, Emiliana B.; Oliveira, Marcelo R. L. (Inorganica Chimica Acta, 2019-02-24)
    Nickel(II) complexes of general formula [Ni(RSO2N = CS2)(PPh3)2] (2a–h) or [Ni(RSO2N = CS2)dppe] (3a–h), where R = methyl (a), ethyl (b), butyl (c), octyl (d), phenyl (e), 4-isopropylphenyl (f), 4-tert-butylphenyl (g), ...
  • Silva, Luis Henrique M. da; Silva, Maria C. Hespanhol da; Aquino, Roney A. N. de; Francisco, Kelly R.; Cardoso, Marcus V. C.; Minim, Luis A.; Coimbra, Jane S. R. (American Chemical Society, 2006-10-25)
    Ions are known to concentrate in the salt-enriched phase of aqueous two-phase systems, with the only known exception being the pertechnetate anion, TcO(4)(-). We have discovered a second ion, nitroprusside anion (NP), which ...
  • Oliveira, Ramon Prata; Demuner, Antonio Jacinto; Alvarenga, Elson Santiago; Barbosa, Luiz Claudio Almeida; Silva, Thiago de Melo (Journal of Molecular Structure, 2018-02-15)
    Pyrrolizidine alkaloids (PAs) are secondary metabolites found in Crotalaria genus and are known to have several biological activities. A novel macrocycle bislactone alkaloid, coined ethylcrotaline, was isolated and purified ...
  • Rodríguez-Hernández, Diego; Demuner, Antonio J.; Barbosa, Luiz C.A.; Heller, Lucie; Csuk, René (European Journal of Medicinal Chemistry, 2016-06-10)
    A series of novel aryl-1H-1,2,3-triazol-4-yl methylester and amide derivatives of the natural product hederagenin was synthesized aiming to develop new antitumor agents, using Huisgen 1,3-dipolar cycloaddition reactions, ...
  • Silva, Maria C. H. da; Silva, Luis H. M. da; Paggioli, Fernanda J. (Analytical Sciences, 2005-02-21)
    This work proposes a new method for Co(II) determination based on the use of the triblock copolymer as micellar medium instead of chloroform. The proposed strategy is environmental friendly because the copolymer is ...
  • Moraes, Fernanda C; Alvarenga, Elson S; Amorim, Kariny B; Demuner, Antonio J; Pereira‐Flores, Milton E (Pest Management Science, 2015-04-24)
    Faced with the need to develop herbicides with different modes of action on account of weed resistance to existing herbicides, the sesquiterpene lactones can be the starting point in the search for new bioactive compounds. ...
  • Santos, A. F. da S.; Souza, M. C. de; Diniz, R.; Maia, J. R. da S. (The Journal of Engineering and Exact Sciences, 2018)
    Zinc(II)-Schiff base derivatives of general formula [Zn(L)Cl] n.xH2O {n = 2; x = 1, L = 3- hmp (1), L = 4-hmp (2); x = 0, L = hmyp (3)} were synthesized by the condensation reaction of aminophenol with 2-hydroxybenzaldehyde. ...
  • Pereira, Wagner Luiz; Pires, Diego Arantes Teixeira; Teixeira, Róbson Ricardo; Figueroa-Villar, José Daniel; Nascimento, Claudia Jorge do (Journal of Molecular Structure, 2016-06-05)
    The keto-enol tautomerism of 3-(2-hydroxy-4,4-dimethyl-6-oxo-cyclohexen-1-yl)isobenzofuran- 1(3H-one (1), 3-(2-hydroxy-6-oxocyclohex-1-enyl)isobenzofuran-1(3H)-one (2), 3-(2- hydroxy- 4-methyl-6-oxocyclohex-1-enyl)isoben ...
  • Moraes, Luiza Dumont de Miranda; Carvalho, Regina Simplício; Neves, Álvaro José Magalhães (Revista de Engenharia Química e Química, 2016-10-02)
    Este trabalho trata-se de um estudo de caso exploratório sobre a metodologia ativa conhecida como Peer Instruction (PI). Seu objetivo geral é compreender o funcionamento dessa metodologia e as teorias envolvidas por meio ...
  • Santos, Marcelo H. dos; Rocha, Cláudia Q. da; Vilela, Fabiana C.; Cecília, Flávia V. Santa; Cavalcante, Gustavo P.; Vilegas, Wagner; Paiva, Alexandre Giusti (Revista Brasileira de Farmacognosia, 2015-05)
    Arrabidaea brachypoda Bureau, Bignoniaceae, known as "cipó-una", is widely used in traditional medicine in Southeastern and Northeastern Brazil for kidney stones and painful joints. This study was aimed at evaluating the ...
  • Sartori, Suélen K; Alvarenga, Elson S; Franco, Cristiane A; Ramos, Danielle S; Oliveira, Denilson F (Pest Management Science, 2018-01-09)
    In the context of the demand for more efficient herbicides, the aim of the present work was to synthesize anilides via simple methods, and evaluate their herbicidal activities through seed germination assays. In silico ...
  • Goulart, Simone Machado; Alves, Renata Domingos; Neves, Antônio Augusto; Queiroz, José Humberto de; Assis, Tamires Condé de; Queiroz, Maria Eliana L.R. de (Analytica Chimica Acta, 2010-05-10)
    Using a 23 experimental design, liquid–liquid extraction with low temperature partitioning (LLE-LTP) was optimized and validated for analysis of three carbamates (aldicarb, carbofuran and carbaryl) in water samples. In ...

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