[PDF] Top 20 J. Braz. Chem. Soc. vol.18 número7
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J. Braz. Chem. Soc. vol.18 número7
... product of a graduate program is neither articles and books, nor theses and dissertations, but those students graduating with Master’s and PhD degrees, who will apply the knowledge a[r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... 15. Julg, A.; François, Ph.; Theor. Chim. Acta 1967, 7, 249; Bird, C. W.; Tetrahedron 1985, 41, 1409; Krygowski, T.M.; Ciesielski, A.; Cyranski, M.; Chem. Pap. 1995, 49, 128; Kruszewski, J.; Krygowski, T. ... See full document
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J. Braz. Chem. Soc. vol.18 número7 pt v18n7a01
... Neste triênio, houve um aumento de 40% (de 44 para 61) no número de Programas, acompanhada de uma descentralização da distribuição geográfica dos Programas de Pós-Graduação com a cri[r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... and digitoxigenin were similar. Assignments of the above mentioned carbons were attested by HMQC spectrum, whereas COSY data allowed confirming the attribution of some hydrogens. Hence, H-2β (δ 2.34 J = 14.4, 14.4 ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... The comparison between the three organoboron compounds using competitive experiments and electrospray ionization mass spectrometry analysis supports the proposition that the base initial[r] ... See full document
5
J. Braz. Chem. Soc. vol.18 número7
... Um novo sistema híbrido para detecção simultânea de cafeína (CAF), dipirona (DIP) e de ergotamina (ERG) foi desenvolvido para teste de preparações farmaceuticas. ERG foi determinada por um sinal fluorimétrico, enquanto ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... 11. Eight total syntheses of pancratistatin have been reported to date: Danishefsky, S.; Lee, J. Y.; J. Am. Chem. Soc. 1989, 111, 4829; Tian, X.; Koenigsberger, K.; Hudlicky, T.; J. Am. ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... Brondani, S.; Moura, S.; Zanatta, N.; Bonacorso, H. G.; Flores, A. F. C.; J. Braz. Chem. Soc. 2006, 17, 408; de Oliveira, R. N.; de Freitas Filho, J. R.; Srivastava, R. M.; Tetrahedron ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... The n-butanol extract (0.55 g) was submitted to column chromatography on Sephadex LH-20 using MeOH as eluent to give 7 fractions after TLC analysis. Fraction 3 (180.0 mg) was subjected to column chromatography on ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... 20. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Montgomery Jr., J. A.; Vreven, T.; Kudin, K. N.; Burant, J. C.; Millam, J. M.; ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... IR spectra of solid complexes of chitosan and Cu 2+ extracted from aqueous HCl solutions at various pHs in ligand to metal ratio of 1:1... secondary alcohols respectively[r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... Initially, experiments were performed varying the volume of sampling loop (Figure 1) to verify the response of the resin column to retain bromide ions yielding the results summarized in [r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... 45. Gaussian 03, Revision B.05, Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Montgomery Jr., J. A.; Vreven, T.; Kudin, K. N.; Burant, J. C.; ... See full document
9
J. Braz. Chem. Soc. vol.18 número7
... presence of a tertiary alcohols, and secondary alcohols in the presence of tertiary alcohols (Table 2, entries 5-8). The high selectivity for the conversion of alcohols in the presence of thiols was also demonstrated ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... Perfluoroalkylated N-containing heterocycles can be obtained by various methods, including the widely used reactions of 1,3-dicarbonyl compounds with bi- nucleophiles. For example, the cyclization of N-C-N blocks (urea, ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... In view of the above mentioned antioxidative and neuroprotective properties of both C 60 and ebselen derivatives, it is expected that the covalent attachment of the biologically active [r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... Compared with the naked nanoparticles, abundant absorption peaks in the spectrum of the modified particles confirmed the successful coating of polymer on iron oxide surface.. The observa[r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... The original algorithm 9 has been extended to solve nonlinear integral problems 8 and to handle eigenvalue force field inverse problems.. 13.[r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... Aerial parts of cultivated Egletes viscosa Less were harvested from garden beds at the Departamento de Fitotecnia of the Universidade Federal do Ceará, Fortaleza, Ceará State.. Voucher[r] ... See full document
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J. Braz. Chem. Soc. vol.18 número7
... in this study. Recording of the absorbance signal profile was done with a PC computer. A Varian spectra-AA hollow cathode lamp for thallium was also used as the light source. The furnace tube was a standard platform tube ... See full document
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