Search Results - "Comasseto, João V"

Biocatalysis and biotransformation in Brazil: An overview by Birolli, Willian G., Ferreira, Irlon M., Alvarenga, Natália, Santos, Darlisson de A., de Matos, Iara L., Comasseto, João V., Porto, André L.M.

“…This review presents the recent research in biocatalysis and biotransformation in Brazil. Several substrates were biotransformed by fungi, bacteria and plants…”
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Stereoselective Bioreduction of α-Azido Ketones by Whole Cells of Marine-Derived Fungi by Rocha, Lenilson C., Seleghim, Mirna H. R., Comasseto, João V., Sette, Lara D., Porto, André L. M.

“…Seven strains of marine-derived fungi (Aspergillus sclerotiorum CBMAI 849, Cladosporium cladosporioides CBMAI 857, Penicillium raistrickii CBMAI 931,…”
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Tellurium in organic synthesis: a general approach to buteno- and butanolides by Ferrarini, Renan S., Dos Santos, Alcindo A., Comasseto, João V.

“…The naturally occurring butanolides (−)-blastmycinolactol, (+)-blastmycinone, (−)-NFX-2, (+)-antimycinone as well as the four stereoisomers of the butenolide…”
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Biotransformations on organic selenides and tellurides: synthetic applications by Comasseto, João V., Gariani, Rogério A.

“…[Display omitted] Chemical transformations promoted by enzymes in organic selenides and tellurides are reviewed…”
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Tellurium in organic synthesis: a general approach to buteno- and butanolides by Ferrarini, Renan S., Dos Santos, Alcindo A., Comasseto, João V.

“…The naturally occurring butanolides (−)-blastmycinolactol, (+)-blastmycinone, (−)-NFX-2, (+)-antimycinone as well as the four stereoisomers of the butenolide…”
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Synthetic organotelluride compounds induce the reversal of Pdr5p mediated fluconazole resistance in Saccharomyces cerevisiae by Reis de Sá, Leandro Figueira, Toledo, Fabiano Travanca, de Sousa, Bruno Artur, Gonçalves, Augusto César, Tessis, Ana Claudia, Wendler, Edison P, Comasseto, João V, Dos Santos, Alcindo A, Ferreira-Pereira, Antonio

“…Resistance to fluconazole, a commonly used azole antifungal, is a challenge for the treatment of fungal infections. Resistance can be mediated by…”
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Selenium and tellurium chemistry: historical background by Comasseto, João V

“…In this paper we present a general survey on the history of the selenium and tellurium chemistry in Brazil and worldwide…”
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An alternative approach for the synthesis of aryl–alkyl tellurides: reaction of aryl iodides with metal alkyltellurolates promoted by CuI by Silva, Márcio S., Comasseto, João V.

“…Aryl iodides react with metal organotellurolates in tetrahydrofuran/dimethylformamide in the presence of CuI (5 mol %) or CuI (5 mol %) and 1,10-phenanthroline…”
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Stability Study of Hypervalent Tellurium Compounds in Aqueous Solutions by Princival, Cleverson R, Archilha, Marcos V. L. R, Dos Santos, Alcindo A, Franco, Maurício P, Braga, Ataualpa A. C, Rodrigues-Oliveira, André F, Correra, Thiago C, Cunha, Rodrigo L. O. R, Comasseto, João V

“…Hypervalent tellurium compounds (telluranes) are promising therapeutical agents with negligible toxicities for some diseases in animal models. The C–Te bond of…”
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Stereocontrolled Synthesis of (−)-Macrolactin A by Marino, Joseph P, McClure, Michael S, Holub, David P, Comasseto, João V, Tucci, Fabío C

“…The total synthesis of (−)-macrolactin A, a 24-membered macrolide, has been achieved using a newly developed 1,3-diol synthon for the introduction of two key…”
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Metallic chalcogenolates mediated modular Michael-aldol cascade reaction: an easy route to multi-functionalized chalcogenides and Morita–Baylis–Hillman adducts by Sousa, Bruno A., Keppler, Arthur F., Gariani, Rogério A., Comasseto, João V., Dos Santos, Alcindo A.

“…Chalcogenolate mediated Michael-aldol cascade reactions consists of a very efficient route to multi-functionalized γ-hydroxichalcogenides. Although, when…”
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A tellurium-based cathepsin B inhibitor: Molecular structure, modelling, molecular docking and biological evaluation by Caracelli, Ignez, Vega-Teijido, Mauricio, Zukerman-Schpector, Julio, Cezari, Maria H.S., Lopes, José G.S., Juliano, Luiz, Santos, Paulo S., Comasseto, João V., Cunha, Rodrigo L.O.R., Tiekink, Edward R.T.

“…► Tellurium compounds display pharmaceutical potential. ► Cathepsin B is a likely target for thiophilic tellurium. ► Intramolecular Te⋯O(carbonyl) contacts…”
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Antiproliferative and ultrastructural effects of phenethylamine derivatives on promastigotes and amastigotes of Leishmania ( Leishmania ) infantum chagasi by Brasil, Paula Ferreira, de Freitas, Júlia Araújo, Barreto, Anna Léa Silva, Adade, Camila Marques, de Sá, Leandro Figueira Reis, Constantino-Teles, Pamella, Toledo, Fabiano Travanca, de Sousa, Bruno A, Gonçalves, Augusto Cesar, Romanos, Maria Teresa Villela, Comasseto, João V, dos Santos, Alcindo A, Tessis, Ana Claudia, Souto-Padrón, Thais, Soares, Rosangela Maria A, Ferreira-Pereira, Antonio

“…Abstract Leishmania ( Leishmania ) infantum chagasi is one of the agents that cause visceral leishmaniasis. This disease occurs more frequently in third world…”
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Tellurium-based cysteine protease inhibitors: evaluation of novel organotellurium(IV) compounds as inhibitors of human cathepsin B by Cunha, Rodrigo L.O.R., Urano, Miriam E., Chagas, Jair R., Almeida, Paulo C., Bincoletto, Cláudia, Tersariol, Ivarne L.S., Comasseto, João V.

“…The inhibition of Cathepsin B by a sort of different classes of organotellurium(IV) compounds was described. New organotellurium(IV) compounds with specific…”
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Novel cross-coupling reactions between organotellurides and Grignard reagents employing a MnCl2/CuI catalytic system by Silva, Marcio S., Ferrarini, Renan S., Sousa, Bruno A., Toledo, Fabiano T., Comasseto, João V., Gariani, Rogério A.

“…We present a general protocol for the cross-coupling reaction of Grignard reagents and organic tellurides. Aryl Grignard reagents react stereospecifically with…”
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A new approach to organomanganese compounds: the tellurium/manganese exchange reaction by Silva, Márcio S., Comasseto, João V., Dos Santos, Alcindo A.

“…Diorganomanganese compounds react with aryl, vinyl, and alkynyl tellurides in a tellurium/manganese exchange reaction. The new mixed organomanganese reagents…”
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Reactive organometallics from organotellurides: application in organic synthesis by Princival, Jefferson L, Santos, Alcindo A. Dos, Comasseto, João V

“…In this paper the preparation of reactive organometallics starting from organotellurides is reviewed. The application of the reactive organometallics prepared…”
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Irreversible inhibition of human cathepsins B, L, S and K by hypervalent tellurium compounds by Cunha, Rodrigo L O R, Gouvêa, Iuri E, Feitosa, Geovana P V, Alves, Márcio F M, Brömme, Dieter, Comasseto, João V, Tersariol, Ivarne L S, Juliano, Luiz

“…The inhibition of human cysteine cathepsins B, L, S and K was evaluated by a set of hypervalent tellurium compounds (telluranes) comprising both organic and…”
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Enzymatic kinetic resolution of organochalcogenides in supercritical CO2 by Gariani, Rogério A., Luengo, Fernando A.G., Vale, Luiz A.S., Bazito, Reinaldo C., Comasseto, João V.

“…1-(Phenylthio)-, 1-(phenylseleno)- and 1-(phenyltelluro)-propan-2-ol were efficiently resolved by CAL-B in sc-CO2…”
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N-Functionalized organolithium compounds via tellurium/lithium exchange reaction by Vargas, Fabricio, Toledo, Fabiano T, Comasseto, João V

“…A set of tellurium amines have been evaluated in the tellurium/lithium exchange reaction. The nitrogen-containing organolithium compounds were efficiently…”
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