Buscar
Mostrando ítems 1-10 de 12
Effect of Electronic Interactions on NMR (1)J(CF) and (2)J(CF) Couplings in cis- and trans-4-t-Butyl-2-fluorocyclohexanones and Their Alcohol Derivatives
(Amer Chemical SocWashingtonEUA, 2011)
Stereochemical dependence of NMR geminal spin-spin coupling constants
(Wiley-blackwellHobokenEUA, 2009)
Conformation of 4-thio-L-lyxono-1,4-lactone in solution and in the crystalline state
(Elsevier Ltd, 1996)
The conformation in 2H2O of 4-thio-L-lyxono-1,4-lactone (1) was studied by nuclear magnetic resonance spectroscopy, by means of homonuclear (J(1(H),1(H))) and heteronuclear (J(1(H),13(C))) coupling constants. The couplings ...
A search for C-H···O type hydrogen bonds in Lamivudine (3TC). An exploratory conformational and electronic analysis
(Elsevier Science, 2001-06-22)
A conformational study of the molecule Lamivudine (3TC), or cis-1-[2′-hydroxymethyl-5′-(1,3-oxathiolanyl)] cytosine, was carried out. Rotation about the C-N bond (φ1) and about the C-CH2(OH) bond (φ2), which connects the ...
Uso da modelagem molecular na solução de problemas em química
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2014-08-29)
The studies presented herein show the use of molecular modelling coupled to spectroscopic data to tackle four different problems in organic chemistry. In the first study, the sulfonylation of the primary hydroxyl group of ...
Characterization of hydroxymethylpyrimidine phosphate kinase from mesophilic and thermophilic bacteria and structural insights into their differential thermal stability
(Elsevier, 2020)
The hydroxymethylpyrimidine phosphate kinases (HMPPK) encoded by the thiD gene are involved in the thiamine biosynthesis pathway, can perform two consecutive phosphorylations of 4-amino-5-hydroxymethyl-2methyl pyrimidine ...
Historia evolutiva de la actividad 4-amino-5-hidroximetil-2-metilpirimidina fosfato quinasa de bacterias
(Universidad de Chile, 2023)
Las quinasas de vitaminas son fosfotransferasas dependientes de ATP que participan en la biosíntesis de vitamina B1 y B6 fosforilando en general un grupo alcohol primario (R-OH) del sustrato. Dentro de esta familia se han ...
Uso de fármacos e consumo de nutrientes por idosos
(Pontifícia Universidade Católica do Rio Grande do SulPorto Alegre, 2012)
Introdução : Alterações fisiológicas decorrentes do envelhecimento levam o idoso a deficiências nutricionais que podem ser agravadas pelo consumo inadequado de nutrientes na dieta e pela polifarmácia.Objetivos : O artigo ...