Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Paulo Teixeira de Sousa"'
Autor:
Bruna Assis Paim dos Santos, Aline Silva Cossolin, Hélen Cristina Oliveira dos Reis, Ketinny Camargo de Castro, Evanleide Rodrigues da Silva, Gabriele de Menezes Pereira, Paulo Teixeira de Sousa Junior, Evandro Luiz Dall'Oglio, Leonardo Gomes de Vasconcelos, Eduardo Beraldo de Morais
Publikováno v:
Revista Ambiente & Água, Vol 14, Iss 1, Pp 1-15 (2019)
In this study, baker’s yeast-MnO2 composites, produced by direct oxidation of yeast with KMnO4 under acidic conditions, were used as biosorbent to remove the triphenylmethane dye Malachite green (MG) from an aqueous solution. Parameters that influe
Externí odkaz:
https://doaj.org/article/33197371f94f435ebbb47ebe3ce50052
Autor:
Carla Maria Abido Valentini, Luiz Everson da Silva, Eduardo Nunes Maciel, Elton Franceschini, Paulo Teixeira de Sousa Jr., Evandro Luiz Dall'Oglio, Maria de Fátima Barbosa Coelho
Publikováno v:
Química Nova, Vol 33, Iss 7, Pp 1506-1509 (2010)
This work describes the volatile composition obtained by hidrodistillation of fresh leaves of Siparuna guianensis Aublet collected from Cuiabá (MT), Brazil. The composition of DCM extract of hydrolate was determined by GC-MS analysis and the results
Externí odkaz:
https://doaj.org/article/6080d60798754856a22eb1512bc5c2fb
Autor:
Luiz Everson da Silva, Paulo Teixeira de Sousa Jr., Antonio Carlos Joussef, Clóvis Piovezan, Ademir Neves
Publikováno v:
Química Nova, Vol 31, Iss 5, Pp 1161-1164 (2008)
Sulfonamides obtained by reaction of 8-aminoquinoline with 4-nitrobenzenesulfonylchloride and 2,4,6-triisopropylbenzenesulfonyl chloride were used to synthesize coordination compounds with CuII and ZnII with a ML2 composition. Determination of the cr
Externí odkaz:
https://doaj.org/article/dc9ef82a59cd4b1dabc39316ba03d270
Autor:
Sally Katiuce Moccelini, Virgínia Claudia da Silva, Eliane Augusto Ndiaye, Paulo Teixeira de Sousa Jr., Paulo Cezar Vieira
Publikováno v:
Química Nova, Vol 32, Iss 1, Pp 131-133 (2009)
Chemical investigation from root barks of Z. rigidum, resulted in the isolation of lupeol, a mixture of steroids campesterol, sitosterol, stigmasterol, sacarose, hesperidin, N-methylatanine and 6-acetonyldihydrochelerythrine. Their structures were es
Externí odkaz:
https://doaj.org/article/c5382d19a0164226baf6d92112643cf5
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 1, Pp m22-m23 (2008)
In the title compound, [Zn(C17H14Cl2N3O3S)2(H2O)2], the ZnII ion has a tetrahedral coordination formed by the two N atoms of the sulfonamide groups and the two water molecules. Two inter- and two intramolecular O—H...O hydrogen bonds are observed i
Externí odkaz:
https://doaj.org/article/db60ecf022744de28b5e78b6782b776e
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 1, Pp o52-o52 (2008)
In the title compound, C18H19N3O3S, the phenyl ring and the pyrazole ring are twisted with respect to each other by an angle of 49.11 (7)°. The C—N—S—C torsion angle is −122.5 (2)°. The methyl group bonded to the N atom of the pyrazole ring
Externí odkaz:
https://doaj.org/article/811214d0dec64391b7d8d36690b1c4a9
Autor:
Marco J. Jacinto, Carlos Henrique Corrêa dos Santos, Paulo Teixeira de Sousa, Virgínia C. P. Silva, Mayara C. Sousa, Tereza A. N. Ribeiro
Publikováno v:
European Journal of Medicinal Plants. :14-20
In this study was reported the structural elucidation by means of nuclear magnetic resonance (1D and 2D), FT-IR and mass spectrometry of lupeol (1), a mixture of the steroids campesterol (2), b-sitosterol (3) and stigmasterol (4), sesamin (5), trans-
Autor:
Arielly Celestino Rodrigues dos Santos, Akbar Ali, Jhully Wellen Ferreira Lacerda, Bruno Rodrigues Fazolo, Leonardo Gomes de Vasconcelos, Olívia Moreira Sampaio, Jéssica Maria de Souza, Mariana de Souza Moura, Paulo Teixeira de Sousa Junior, Evandro Luiz Dall'Oglio, Lucas Campos Curcino Vieira
Publikováno v:
Photochemistry and Photobiology. 96:1233-1242
We report the synthesis of twelve indole derivatives bearing nitro or amide groups via Fischer indole methodology followed by reduction/acetylation and amidation reactions. After thorough characterization, these indoles were subjected to a number of
Autor:
Sheila Rodrigues do Nascimento Pelissari, Adilson Paulo Sinhorin, Paulo Teixeira de Sousa Junior, Domingos de Jesus Rodrigues, Leonardo Gomes de Vasconcelos, Valéria Dornelles Gindri Sinhorin, Eloana Benassi Ribeiro de Souza, Jacqueline Kerkhoff
Publikováno v:
Toxicon. 179:101-106
Amphibian cutaneous secretion has great potential for bioprospection and is a great tool in the development of bioproducts. Thus, the objective of the present work was to evaluate the comparative study of the chemical profile parotoid gland secretion
Autor:
Tamires R. D. Bomfim, Mário Geraldo de Carvalho, Sabrina K. Targanski, Ivana M. P. Violante, Virgínia C. P. Silva, Yasmin S. A. D. da Silva, Francyne C. S. Correia, Paulo Teixeira de Sousa, Tereza A. N. Ribeiro
Publikováno v:
Revista Virtual de Química. 12:809-816
Phytochemical investigation of the branches and leaves of the species Cordia insignis led to the isolation and identification of β-sitosterol (1), stigmasterol (2), campesterol (3), 3-O-β-D-glucopyranosyl sitosterol (4), 3-O-β-D- glucopyranosyl st