Zobrazeno 1 - 10 of 177 pro vyhledávání: '"João V. Comasseto"'
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Akademický článek
Mechanistic aspects of the isomerization of Z-vinylic tellurides double bonds in the synthesis of potassium Z-vinyltrifluoroborate salts
Autor: Hélio A. Stefani, Rafael C. Guadagnin, Artur F. Keppler, Giancarlo V. Botteselle, João V. Comasseto, Carlos A. Suganuma
Publikováno v: Beilstein Journal of Organic Chemistry, Vol 4, Iss 1, p 9 (2008)
Through direct transmetalation reaction of Z-vinylic tellurides with nBuLi was observed the unexpected isomerization of double bonds leading to potassium E-vinyltrifluoroborates salts in low to moderate yields. Using EPR spin trapping experiments the
Externí odkaz: https://doaj.org/article/afa68cb95a28479dbf2140f257ed720b
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4
Stability Study of Hypervalent Tellurium Compounds in Aqueous Solutions
Autor: André F. Rodrigues-Oliveira, Marcos V. L. R. Archilha, Cleverson Princival, Ataualpa A. C. Braga, Thiago C. Correra, Rodrigo L. O. R. Cunha, João V. Comasseto, Mauricio P. Franco, Alcindo A. Dos Santos
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Repositório Institucional da UNIFESP
Universidade Federal de São Paulo (UNIFESP)
instacron:UNIFESP
ACS Omega, Vol 2, Iss 8, Pp 4431-4439 (2017)
ACS Omega
FAPESP CNPq CAPES NAP-CatSinQ Hypervalent tellurium compounds (telluranes) are promising therapeutical agents with negligible toxicities for some diseases in animal models. The C-Te bond of organotellurium compounds is commonly considered unstable, d
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b13653c855281e7f0b841a795b26085
https://doi.org/10.1021/acsomega.7b00628
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5
Hydrogenation of bis-α,β-unsaturated enones mediated by filamentous fungi
Autor: Lenilson C. Rocha, João V. Comasseto, Irlon M. Ferreira, João Batista da Cruz, Suzan Pantaroto de Vasconcellos, André Luiz Meleiro Porto
Publikováno v: Biocatalysis and Agricultural Biotechnology. 4:144-149
In this study was used two strains of marine-derived fungi ( Penicillium citrinum CBMA1186 and Trichoderma sp. CBMAI 932) and two strains of terrestrial fungi ( Aspergillus sp. FPZSP 146 and Aspergillus sp. FPZSP 152) to biotransformation bis-α,β-u
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d8aa29ac5c97ba80a8e1327b8f579ae
https://doi.org/10.1016/j.bcab.2015.03.001
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6
Immobilization of amano lipase from pseudomonas fluorescens on silk fibroin spheres: an alternative protocol for the enantioselective synthesis of halohydrins
Autor: Sergio Akinobu Yoshioka, Irlon M. Ferreira, João V. Comasseto, André Luiz Meleiro Porto
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
The search for a new, efficient, cheaper and sustainable matrix for lipase immobilization is a growing area in biotechnology. Amano lipase from Pseudomonas fluorescens was immobilized on silk fibroin spheres and used in the enzymatic kinetic resoluti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b096131778832524eb6a7e8a71d07dc6
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7
Antiproliferative and ultrastructural effects of phenethylamine derivatives on promastigotes and amastigotes of Leishmania (Leishmania) infantum chagasi
Autor: Bruno A. Sousa, Fabiano T. Toledo, Pamella Constantino-Teles, Rosangela Maria de Araújo Soares, Leandro Figueira Reis de Sá, Ana Claudia Tessis, Camila M. Adade, Júlia Araújo de Freitas, Alcindo A. Dos Santos, João V. Comasseto, Thaïs Souto-Padrón, Antonio Ferreira-Pereira, Anna Léa Silva Barreto, Maria Teresa Villela Romanos, Paula Ferreira Brasil, Augusto Cesar Gonçalves
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Leishmania (Leishmania) infantum chagasi is one of the agents that cause visceral leishmaniasis. This disease occurs more frequently in third world countries, such as Brazil. The treatment is arduous, and is dependent on just a few drugs like the ant
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b926940cdee2424613ac4503a07c83d3
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9
Tellurium in organic synthesis: a new approach to trisubstituted γ-butyrolactones with trans–trans relative stereochemistry. Total enantioselective synthesis of (−)-Blastmycinolactol, (+)-Blastmycinone, (−)-NFX-2, and (+)-Antimycinone
Autor: Alcindo A. Dos Santos, João V. Comasseto, Renan S. Ferrarini
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
The total synthesis of (−)-Blastmycinolactol, (+)-Blastmycinone, (−)-NFX-2, and (+)-Antimycinone was accomplished in few steps in high yields and ee, starting from enantiomerically enriched ( S )- Z -vinylic hydroxytellurides.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b6f91da94bbb7af34e200956c97ea25
https://doi.org/10.1016/j.tetlet.2010.10.089
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10
Influence of different protecting groups on the regioselectivity of the hydrotelluration reaction of hydroxy alkynes
Autor: João V. Comasseto, Juliana M. Oliveira, Paulo H. Menezes, Dayvson J. Palmeira, Lineu Prestes, Luiz Freire
Publikováno v: Journal of the Brazilian Chemical Society. 21:362-366
A influencia de grupos protetores na sintese regio- e estereosseletiva de teluretos vinilicos preparados a partir de BuTeNa e alcoois propargilicos e homopropargilicos demonstrou que o eter de silicio TIPS e util como grupo regio-dirigente. A aplicac
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b565d891dd1e234faa00c32f116f810a
https://doi.org/10.1590/s0103-50532010000200024
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