Search Results - "Oliveira, Alfredo R.M."

Enzymatic kinetic resolution of aliphatic sec-alcohols by LipG9, a metagenomic lipase by Bandeira, Pamela T., Alnoch, Robson C., de Oliveira, Alfredo R.M., de Souza, Emanuel M., de O. Pedrosa, Fábio, Krieger, Nadia, Piovan, Leandro

“…[Display omitted] •Metagenomics is a useful technique for finding new biocatalysts.•LipG9 was successful employed in enzymatic kinetic resolution of aliphatic…”
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Puzzling Reaction of Imidazole with Methyl Parathion: P=S versus P=O Mechanistic Shift Dilemma in Organophosphates by Silva, Valmir B., Nascimento, Leonardo L. Q., Nunes, Marcelo C., Campos, Renan B., Oliveira, Alfredo R. M., Orth, Elisa S.

“…Organophosphates (OPs) constitute many toxic agrochemicals and warfare and can undergo a wide spectrum of mechanisms, some which are fairly unexplored. In this…”
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Competitive Reactivity of Tautomers in the Degradation of Organophosphates by Imidazole Derivatives by Campos, Renan B., Silva, Valmir B., Menezes, Leociley R. A., Ocampos, Fernanda M. M., Fernandes, Juliano M., Barison, Andersson, Oliveira, Alfredo R. M., Tantillo, Dean J., Orth, Elisa S.

“…The harmful impact caused by pesticides on human health and the environment necessitates the development of efficient degradation processes and control of…”
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Mechanistic insight on the catalytic detoxification of Paraoxon mediated by imidazole: Furnishing optimum scaffolds for scavenging organophosphorus agents by Orth, Elisa S., Almeida, Thomas Golin, Silva, Valmir B., Oliveira, Alfredo R.M., Ocampos, Fernanda Maria Marins, Barison, Andersson

“…[Display omitted] •Mechanistic study for degradation of the toxic pesticide Paraoxon with imidazole.•Powerful nucleophilic detoxifying activity of imidazole by…”
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An unexpected inversion of CAL-B enantiopreference based on substrate engineering of 2-bromoesters: Effect of (R)-1-phenylethyl moiety by da Silva, Thiago Sabino, Campos, Suelem Kluconski, de Oliveira, Alfredo R.M., Piovan, Leandro

“…[Display omitted] •CAL-B acyl-enantiopreference was modulated by substrate/nucleophile changes.•First time this kind of inversion by CAL-B-mediated EKR has…”
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Straightforward microwave-assisted synthesis of organochalcogen amines by reductive amination by Dalmolin, Mara C., Bandeira, Pamela T., Ferri, Matheus S., de Oliveira, Alfredo R.M., Piovan, Leandro

“…Organoselenium and organotellurium amines have been shown to present a broad range of interesting properties for both synthetic and biological applications…”
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Unsymmetrical double Wittig olefination on the syntheses of insect pheromones. Part 1: Synthesis of 5,9-dimethylpentadecane, the sexual pheromone of Leucoptera coffeella by Zarbin, Paulo H.G., Princival, Jefferson L., de Lima, Eraldo R., dos Santos, Alcindo A., Ambrogio, Bianca G., de Oliveira, Alfredo R.M.

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Synthesis, Antioxidant Activity and Cytotoxicity of N-Functionalized Organotellurides by Bandeira, Pamela T., Dalmolin, Mara C., de Oliveira, Mariana M., Nunes, Karine C., Garcia, Francielle P., Nakamura, Celso V., de Oliveira, Alfredo R.M., Piovan, Leandro

“…[Display omitted] The use of antioxidants is the most effective means to protect the organism against cellular damage caused by oxidative stress. In this…”
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Facile room temperature synthesis of large graphene sheets from simple molecules by Lopes, Laís C, da Silva, Lidya C, Vaz, Boniek G, Oliveira, Alfredo R M, Oliveira, Marcela M, Rocco, Maria L M, Orth, Elisa S, Zarbin, Aldo J G

“…The largest graphene sample obtained through a chemical reaction under ambient conditions (temperature and pressure), using simple molecules such as benzene or…”
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Synthesis, Mechanism Elucidation and Biological Insights of Tellurium(IV)‐Containing Heterocycles by Souza, João Pedro A., Menezes, Leociley R. A., Garcia, Francielle P., Scariot, Débora B., Bandeira, Pamela T., Bespalhok, Mateus B., Giese, Siddhartha O. K., Hughes, David L., Nakamura, Celso V., Barison, Andersson, Oliveira, Alfredo R. M., Campos, Renan B., Piovan, Leandro

“…Inspired by the synthetic and biological potential of organotellurium substances, a series of five‐ and six‐membered ring organotelluranes containing a Te−O…”
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A simple protocol for the preparation of β-enamino ketones catalyzed by NbOPO4 under solvent free conditions by Wodtke, Felipe, Xavier, Fernando R., Mendes, Samuel R., de Oliveira, Alfredo R.M., Gariani, Rogério A.

“…[Display omitted] •Synthesis of β-enamino ketone promoted by niobium oxide phosphate (NbOPO4).•Niobium oxide phosphate has emerged as a promising alternative…”
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Investigation of Chemical Stability of Dihalogenated Organotelluranes in Organic–Aqueous Media: The Protagonism of Water by Teixeira, Mariana L, Menezes, Leociley R. A, Barison, Andersson, de Oliveira, Alfredo R. M, Piovan, Leandro

“…The biological activity of tellurium compounds is closely related to the tellurium oxidation state or some of their structural features. Hypervalent…”
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Complementary Performance of Organoselenides and Organotellurides as Antimicrobials Agents by Borges, Felipe, Zugman, Tay, Bandeira, Pamela, Dalmolin, Mara, Scariot, Débora, Garcia, Francielle, de Oliveira, Alfredo, Nakamura, Celso, Piovan, Leandro

“…Fungi and bacteria are well-known pathogens for plants, fruits, and animals, including humans. In this context, the prospection of antimicrobial agents is…”
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Directed Functionalization of Halophenyl-2-oxazolines with TMPMgCl·LiCl by Batista, João H. C., dos Santos, Fernanda M., Bozzini, Leandro A., Vessecchi, Ricardo, Oliveira, Alfredo R. M., Clososki, Giuliano C.

“…A variety of difunctionalized aryl‐2‐oxazolines were prepared from the reaction of halophenyl‐2‐oxazolines and TMPMgCl·LiCl to give an organomagnesium reagent,…”
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Reactivity of Imidazole Derivatives toward Phosphate Triester in DMSO/Water Mixtures: A Comprehensive Study on the Solvent Effect by Campos, Renan B, Santos, Everton H, Oliveira, Alfredo R. M, Ocampos, Fernanda Maria Marins, Souza, Bruno S, Barison, Andersson, Orth, Elisa S

“…Many imidazole (IMZ) derivatives of pharmaceutical interest, which are potentially catalytic in dephos­phoryl­ation reactions, are soluble solely in mixtures…”
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Synthesis of enaminones with stationary stereochemistry by Wisniewski Junior, Alberto, Oliveira, Alfredo R.M., Cunha, Carlos Jorge da, Simonelli, Fabio, Marques, Francisco A.

“…Five enaminones 4a-e derived from the reaction of 2,4,4-trimethyl-2-oxazoline anion with ethyl acetate, ethyl benzoate, ethyl cyclohexanoate, ethyl hexanoate…”
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Diacetal Ditellurides as Highly Active and Selective Antiparasitic Agents toward Leishmania amazonensis by Bandeira, Pamela T, Souza, João Pedro A, Scariot, Débora B, Garcia, Francielle P, Nakamura, Celso V, de Oliveira, Alfredo R. M, Piovan, Leandro

“…Leishmaniasis is a neglected tropical disease and a public health concern in at least 98 countries, affecting mainly the poorest populations. Pharmaceuticals…”
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An alternative approach to differentially substituted 2-oxazoline chalcogen derivatives by de Mello, Murilo B.M., Clososki, Giuliano C., Piovan, Leandro, de Oliveira, Alfredo R.M.

“…In this study we present an alternative method to obtain several substituted mono or bis-2-oxazolines containing a chalcogen atom as a tether element…”
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Lipase-Mediated Kinetic Resolution: An Introductory Approach to Practical Biocatalysis by Bandeira, Pamela T, Thomas, Juliana C, de Oliveira, Alfredo R. M, Piovan, Leandro

“…An experimental protocol that provides an excellent way to discuss concepts at the crossroads of organic chemistry and biochemistry employing biocatalysis is…”
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A Short and Stereoselective Synthesis of the Sex Pheromone of Bonagota cranaodes (Lepidoptera: Tortricidae) by Simonelli, Fabio, Oliveira, Alfredo R.M., Marques, Francisco A., Silva, Davi C.

“…A stereoselective synthesis of (3E,5Z)-dodecadienyl acetate, the sex pheromone of the leafroller moth Bonagota cranaodes, was efficiently carried out using a…”
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