Zobrazeno 1 - 10 of 33 pro vyhledávání: '"Luiz S. Longo"'
1
Akademický článek
Estudo das condições reacionais da reação de clivagem oxidativa de β-hidróxi éteres bicíclicos promovida por tetróxido de rutênio Study of the conditions of the ruthenium tetraoxide-promoted oxidative cleavage reaction of bicyclic β-hydroxy ethers
Autor: Helena M. C. Ferraz, Alexsandra C. Scalfo, Bruno T. Vilalba, Luiz S. Longo Jr
Publikováno v: Química Nova, Vol 33, Iss 10, Pp 2113-2117 (2010)
A systematic study of the reaction of β-hydroxy ethers with ruthenium tetraoxide (RuO4), generated in situ from ruthenium trichloride and sodium periodate, is presented, leading to nine-membered ring keto-lactones in moderate yields. Three different
Externí odkaz: https://doaj.org/article/a06d16a4d4054a8e9d9962a13b052f58
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2
Akademický článek
Natural occurrence, biological activities and synthesis of eight-, nine-, and eleven-membered ring lactones
Autor: Helena M. C. Ferraz, Fernanda I. Bombonato, Myrian K. Sano, Luiz S. Longo Jr.
Publikováno v: Química Nova, Vol 31, Iss 4, Pp 885-900 (2008)
The natural occurrence, biological activities and synthetic approaches to natural eight-, nine-, and eleven-membered lactones is reviewed. These medium ring lactones are grouped according to ring size, and their syntheses are discussed. The structure
Externí odkaz: https://doaj.org/article/00286e39247c4138ba1d3d2c4aad7953
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3
Akademický článek
Métodos de preparação de lactonas de anel médio Methods for the preparation of medium ring lactones
Autor: Luiz S. Longo Junior, Fernanda I. Bombonato, Helena M. C. Ferraz
Publikováno v: Química Nova, Vol 30, Iss 2, Pp 415-424 (2007)
There are several natural products bearing medium ring lactone moieties, which are those containing a ring size in the range of 8 to 11 members. This review intends to cover the last 10 years (1996-2005) of the literature concerning the synthesis of
Externí odkaz: https://doaj.org/article/187a349e28ed4b8792e0bb000563690c
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4
Akademický článek
REPARAÇÃO DE α-ACETILOXI-N-CICLOEXILAMIDAS ATRAVÉS DA REAÇÃO DE PASSERINI UTILIZANDO DIMETILCARBONATO COMO SOLVENTE AMBIENTALMENTE AMIGÁVEL
Autor: Bárbara R. Oliveira, Carla C. Silva, Juliana C. P. Calado, Wagner L. Batista, Fernanda A. Siqueira, Luiz S. Longo Jr.
Publikováno v: Química Nova, Vol 41, Iss 1, Pp 92-99
A series of α-acetyloxy-N-cyclohexylamides was efficiently obtained via Passerini reaction of cyclohexyl isocyanide, acetic acid, and different aromatic and aliphatic aldehydes using refluxing dichloromethane or dimethylcarbonate (DMC). Reactions pe
Externí odkaz: https://doaj.org/article/3de08c9ff1d44c30aa0233c0a482a248
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8
A Comparative Study on the Groebke-Blackburn-Bienaymé Three-Component Reaction Catalyzed by Rare Earth Triflates under Microwave Heating
Autor: Everton S. C. Fiorentino, Gabriela F. D. Santos, Nicolas S. Anjos, Miguel M. Gibeli, Luiz S. Longo, Pâmela C. S. Fernandes, Guilherme Augusto Peres Silva
Publikováno v: Journal of the Brazilian Chemical Society, Volume: 31, Issue: 7, Pages: 1434-1444, Published: 03 JUL 2020
Journal of the Brazilian Chemical Society v.31 n.7 2020
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Over the last twenty years, the Groebke-Blackburn-Bienaymé (GBB) reaction has been emerged as a powerful tool to access different nitrogen-based heterocycles as privileged scaffolds in medicinal chemistry. This multicomponent reaction is usually cat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38768e6f2507cf0dea7bd2560edc29cb
https://doi.org/10.21577/0103-5053.20200028
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9
Effect of dicationic ionic liquids on lyotropic liquid crystals formed by a binary system composed of Triton-X 100 and water
Autor: Sarah Alves, Luiz S. Longo, Peter Licence, Leila Thomazelli Thieghi
Publikováno v: Molecular Crystals and Liquid Crystals. 657:95-101
In this work, binary mixtures of a non-ionic surfactant (Triton X-100) and water were studied with concentrations of 30%wt H2O, showing, lamellar mesophase at temperatures below 10oC. Different dicationic ionic liquids were used for doping these meso
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ee171ec00d6790c9a0f47a3f5187687
https://doi.org/10.1080/15421406.2017.1403241
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10
Nitric oxide and interactions with reactive oxygen species in the development of melanoma, breast, and colon cancer: A redox signaling perspective
Autor: Luiz S. Longo, Elaine G. Rodrigues, Arnold Stern, Ana Iochabel Soares Moretti, Adriana Karla Cardoso Amorim Reis, Paulo E da Costa, Mayte dos Santos Toledo, Hugo P. Monteiro, Fernando T. Ogata, Ana Caroline de Souza Teodoro
Publikováno v: Nitric oxide : biology and chemistry. 89
Cancer development is closely related to chronic inflammation, which is associated with identifiable markers of tumor progression, such as uncontrolled cell proliferation, angiogenesis, genomic instability, chemotherapeutic resistance, and metastases
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67e67433e7842df0b0833d3a6958bd87
https://pubmed.ncbi.nlm.nih.gov/31009708
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