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Mostrando ítems 11-20 de 36
Synthesis of dihydroquinazolines from 2-aminobenzylamine: N3-aryl derivatives with electron-withdrawing groups
(Beilstein-Institut, 2018-09)
The sequential N-functionalization of 2-aminobenzylamine (2-ABA) followed by cyclodehydration allowed for a straightforward and efficient synthesis of 3,4-dihydroquinazolines with N-aryl substituents bearing electron-withdrawing ...
Synthesis of arotinoid acid and temarotene using mixed (Z)-1,2-bis(organylchalcogene)-1-alkene as precursor
(Elsevier B.V., 2012-09-26)
An efficient and novel total synthesis of the two bioactive retinoids temarotene and arotinoid acid (TTNPB) is described. The key steps in this process include the regio and stereoselective hydrotelluration of thioacetylene ...
Síntese e atividade biológica de butenolídeos naturais e análogos
(Universidade Federal de Minas GeraisUFMG, 2019-06-07)
Butenolides, y-unsaturated lactones, are present in the structure of a large number of natural products such as nostoclides, rubrolides, fimbrolides and cadiolides. These compounds come mainly from marine metabolites and ...
Regioselective 5-O-Opening of Conformationally Locked 3,5-O-Di-tert-butylsilylene-d-galactofuranosides. Synthesis of (1→5)-β-d-Galactofuranosyl Derivatives
(American Chemical Society, 2016-09)
The use of thiogalactofuranoside as donors for the construction of internal Galf containing oligosaccharide is limited, probably due to the difficulty to functionalize thiogalactofuranoside derivatives showing O-2, O-3, ...
Thioglucopyranose Ligands Promote Phase-transfer of Cadmium Selenide Quantum Dots from Organic Solvents to Water
(Wiley, 2020-12)
The attainment of water-dispersible cadmium selenide quantum dots (CdSe QDs) with bright luminescence and tunable optical properties represents a great challenge to improve their biological applications. Indeed, over the ...
Síntese de candidatos a novos inibidores da enzima Hiv-integrase
(Universidade Federal de Juiz de Fora (UFJF)BrasilICE – Instituto de Ciências ExatasPrograma de Pós-graduação em QuímicaUFJF, 2017)
Double transacetalization of diacylium ions
(John Wiley & Sons LtdW SussexInglaterra, 2000)
Inovações na síntese enzimática de amoxicilina
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQ, 2012-04-27)
Penicillin G acylase (PGA, E.C.3.5.1.11) from Escherichia coli is an enzyme of great industrial importance, widely used for the hydrolysis of penicillin G, producing the 6-aminopenicillanic acid (6-APA), which is a key ...
Cascatas bienzimáticas para a síntese de β-hidroxiamidas quirais: avaliação de escopo de substratos
(Universidade Estadual Paulista (Unesp), 2022-01-31)
A sociedade, bem como as indústrias química e farmacêutica modernas, têm exigido o desenvolvimento e a implementação de metodologias sintéticas que sejam eficientes dos pontos de vista energético, produtivo e ambiental. A ...