Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Guillermo E. Negron-Silva"'
Autor:
Daniel Mendoza-Espinosa, Guillermo E. Negron-Silva, Leticia Lomas-Romero, Atilano Gutierrez-Carrillo, Rosa Santillán
Publikováno v:
Molecules, Vol 19, Iss 1, Pp 55-66 (2013)
The pseudo-four component click synthesis of dibenzylated 1,2,3-triazoles derived from aniline is reported. The cycloaddition of sodium azide to N-(prop-2-ynyl)-benzenamine (I) in the presence of equimolar amounts of p-substituted benzyl derivatives,
Externí odkaz:
https://doaj.org/article/a0b1b802056b46daa52e7278ab77b9c0
Autor:
Alma Sánchez-Eleuterio, Carlos Mendoza-Merlos, Ricardo Corona Sánchez, Alejandra M. Navarrete-López, Anatolio Martínez Jiménez, Elsie Ramírez-Domínguez, Leticia Lomas Romero, Ricardo Orozco Cruz, Araceli Espinoza Vázquez, Guillermo E. Negrón-Silva
Publikováno v:
Molecules, Vol 28, Iss 1, p 460 (2023)
A series of novel 1-N-α-d-glucopyranosyl-1H-1,2,3-triazole xanthines was synthesized from azido sugars (glucose, galactose, and lactose) and propargyl xanthines (theophylline and theobromine) using a typical copper (I)-catalyzed azide–alkyne 1,3-d
Externí odkaz:
https://doaj.org/article/c09c6d2591cc483f9402c31263c0b8ee
Autor:
Ricardo Corona-Sánchez, Alma Sánchez-Eleuterio, Claudia Negrón-Lomas, Yarisel Ruiz Almazan, Leticia Lomas-Romero, Guillermo E. Negrón-Silva, Álvaro C. Rodríguez-Sánchez
Publikováno v:
Royal Society Open Science, Vol 7, Iss 7 (2020)
A series of carbohydrate-linked 1,2,3-triazole derivatives were synthesized in good yields from glucofuranose and allofuranose diacetonides using as key step a three-component 1,3-dipolar azide–alkyne cycloaddition catalysed by a Cu–Al mixed oxid
Externí odkaz:
https://doaj.org/article/255b871fa89945d29fc0b9a856536ef5
Autor:
Araceli Espinoza-Vázquez, Francisco Javier Rodríguez-Gómez, Ivonne Karina Martínez-Cruz, Deyanira Ángeles-Beltrán, Guillermo E. Negrón-Silva, Manuel Palomar-Pardavé, Leticia Lomas Romero, Diego Pérez-Martínez, Alejandra M. Navarrete-López
Publikováno v:
Royal Society Open Science, Vol 6, Iss 3 (2019)
The design and synthesis of a series of theophylline derivatives containing 1,2,3-triazole moieties are presented. The corrosion inhibition activities of these new triazole–theophylline compounds were evaluated by studying the corrosion of API 5 L
Externí odkaz:
https://doaj.org/article/a7cd6d8108534544900f9da98074df34
Autor:
Rodrigo González-Olvera, Araceli Espinoza-Vázquez, Guillermo E. Negrón-Silva, Manuel E. Palomar-Pardavé, Mario A. Romero-Romo, Rosa Santillan
Publikováno v:
Molecules, Vol 18, Iss 12, Pp 15064-15079 (2013)
A series of new mono-1,2,3-triazole derivatives of pyrimidine nucleobases were synthesized by one-pot copper(I)-catalyzed 1,3-dipolar cycloaddition reactions between N-1-propargyluracil and thymine, sodium azide and several benzyl halides. The desire
Externí odkaz:
https://doaj.org/article/d60e354007a44e65b32bdc8b8a256928
Autor:
Mario A. Romero-Romo, Manuel E. Palomar-Pardavé, Nidia Maldonado-Carmona, Araceli Espinoza-Vázquez, Deyanira Angeles-Beltrán, Rodrigo González-Olvera, Guillermo E. Negrón-Silva, Rosa Santillan
Publikováno v:
Molecules, Vol 18, Iss 4, Pp 4613-4627 (2013)
Ten 1,4-disubstituted 1,2,3-triazoles were synthesized from one of 1-(azido-methyl)benzene, 1-(azidomethyl)-4-fluorobenzene, 1-(azidomethyl)-4-chlorobenzene, 1-(azidomethyl)-4-bromobenzene or 1-(azidomethyl)-4-iodobenzene, generated in situ from sodi
Externí odkaz:
https://doaj.org/article/96fac76438d84e25a425bc0b6ec42bad
Autor:
Guillermo E. Negrón-Silva, José Antonio Morales-Serna, Jorge Cárdenas, Rubén Gaviño, Leticia Lomas-Romero, Celia Xochitl Hernández-Reyes, Eduardo González-Zamora, Deyanira Angeles-Beltrán
Publikováno v:
Molecules, Vol 17, Iss 3, Pp 3359-3369 (2012)
New azanucleosides were obtained using sulphated zirconia (ZS) as catalyst in the nucleophilic oxirane ring opening reaction of 1-allyl-3-(oxiran-2-ylmethyl) pyrimidine-2,4(1H,3H)-dione and 1-allyl-5-methyl-3-(oxiran-2-ylmethyl)-pyrimidine-2,4(1H,3H)
Externí odkaz:
https://doaj.org/article/16b6ea6a3e384d8c92707f2fa5be9b52
Autor:
Juan Navarrete-Bolaños, Rubén Gaviño-Ramírez, Eduardo González-Zamora, Leticia Lomas-Romero, Guillermo E. Negrón-Silva, Deyanira Angeles-Beltrán, Laura Nadxieli Palacios-Grijalva, Nahí Adriana Guerra-Navarro
Publikováno v:
Molecules, Vol 16, Iss 8, Pp 6561-6576 (2011)
A comparison was made of the effectiveness of the functionalization reactions of pentacyclo[5.4.0.02,6.03,10.05,9]undecane-8,11-dione (PCU) using sulphated zirconia in protection-deprotection reactions and Mg/Al hydrotalcite in a cyanosilylation reac
Externí odkaz:
https://doaj.org/article/8ec5d30825a247289066d57a7c530ce0
Autor:
Gerardo Ulibarri, Eduardo González-Zamora, Laura Nadxieli Palacios-Grijalva, Leticia Lomas-Romero, Deysi Y. Cruz-González, Guillermo E. Negrón-Silva
Publikováno v:
Molecules, Vol 14, Iss 10, Pp 4065-4078 (2009)
A solvent-free approach is described for the regioselective synthesis of acylals (1,1-diacetates) in shorter reaction times and higher yields, compared to conventional methodology using solvents. In the protection reaction of the o-hydroxybenzaldehyd
Externí odkaz:
https://doaj.org/article/eec254bd59654d2dacd4b014ff5fc263
Autor:
Rodrigo González-Olvera, Viridiana Román-Rodríguez, Guillermo E. Negrón-Silva, Araceli Espinoza-Vázquez, Francisco Javier Rodríguez-Gómez, Rosa Santillan
Publikováno v:
Molecules, Vol 21, Iss 2, p 250 (2016)
An efficient one-pot synthesis of 1,2,3-triazole derivatives of dihydropyrimidinones has been developed using two multicomponent reactions. The aldehyde-1,2,3-triazoles were obtained in good yields from in situ-generated organic azides and O-propargy
Externí odkaz:
https://doaj.org/article/20461ab8a8ce4ef99e56a3eb9b2cedae