Browsing by Title Artículos de revistas

Now showing items 2497-2516 of 2801

    • Synthesis of indazol-4,7-dione derivatives as potential trypanocidal agents 
      Tapia, Ricardo A.; Carrasco, Claudia; Ojeda, Scarlet; Salas, Cristian; Valderrama, Jaime A.; Morello Casté, Antonio; Repetto Scaramelli, Yolanda (2002)
      The synthesis of new indazol-4,7-dione derivatives via 1,3-dipolar cycloaddition of diazomethane with 2,3-dimethyl-1,4-benzoquinone (2) and 1,4-naphthoquinone (7) followed by N-alkylation of the pyrazol nitrogen atom of ...
    • Synthesis of N-(morpholinomethyl) benzamides as moclobemide analogs 
      Pessoa Mahana, Hernán; Astudillo, C. I.; Araya Maturana, Ramiro (MARCEL DEKKER INC, 2002)
      Syntheses of new morpholinomethylbenzamides 6 bearing both electron-withdrawing and electron-releasing groups at the aromatic ring are described. The strategy involved synthesis of hippuric acid ethyl esters 3, their ...
    • Synthesis of new 1-benzyl-4,6-diaryl-2,3-dihydropyrazolo[3,4-b][1,4]diazepines 
      Insuasty, B. A.; Torres, H.; Quiroga, J.; Abonia, R.; Rodríguez, R.; Nogueras, M.; Sánchez, A.; Saitz, C.; Alvarez, S.L.; Zacchino, S.A. (FREUND PUBLISHING HOUSE LTD, 2000)
      The reaction of 4-amino-3-aryl-5-benzylaminopyrazoles (1a,b) with 3-dimethylaminopropiophenones (2) in ethanol with acetic acid gave 1-benzyl-4,6-diaryl-2,3-dihydropyrazolo[3,4-b] [1,4]diazepines (3a-h). The structure ...
    • Synthesis of new 4-nitrosophenyl-1,4-dihydropyridines of pharmacological interest 
      Santander Gutierrez, Ingrid Paola; Núñez Vergara, Luis; Squella Serrano, Juan; Navarrete Encina, Patricio (GEORG THIEME VERLAG KG, 2003-12-18)
      The synthesis and characterization of a series of 4-nitrosophenyl-1.4-dihydropyridines derived from the respective nitro compounds of pharmacological interest is described. The complete synthetic pathway is based on the ...
    • Synthesis of new 4-nitrosophenyl-1,4-dihydropyridines of pharmacological interest 
      Santander Gutiérrez, Ingrid Paola; Núñez Vergara, Luis; Squella Serrano, Juan; Navarrete Encina, Patricio (GEORG THIEME VERLAG KG, 2003-12-18)
      The synthesis and characterization of a series of 4-nitrosophenyl-1.4-dihydropyridines derived from the respective nitro compounds of pharmacological interest is described. The complete synthetic pathway is based on the ...
    • Synthesis of polymeric organic-inorganic hybrid materials. Partially deacetylated chitin-silica hybrid 
      Retuert, Jaime; Nuñez, Alicia; Martínez, Francisco; Yazdani-Pedram Zobeiri, Mehrdad (Wiley-VCH Verlag, 1997)
      This work reports the synthesis of a novel polymeric organic-inorganic hybrid. The inorganic component is a silica network obtained by controlled hydrolysis of tetraethyl orthosilicate via sol-gel process and the organic ...
    • Synthesis of pyrazolo[1,5-a]pyrimidines in the reaction of 5-amino- 3-arylpyrazoles with methoxymethylene ... 
      Quiroga, Jairo; Hormaza, Angelina; Insuasty, Braulio; Saitz Barría, Claudio; Jullian Matthaei, Carolina; Cañete, Alvaro (HeteroCorporation, 1998)
      A series of pyrazolo[1,5-a]pyrimidin-3-ones 3 was prepared from Meldrum's acid and 5-amino-3-arylpyrazoles 1 by cyclization in nitrobenzene of the corresponding 5-pyrazolylaminomethylene Meldrum's acid derivatives 2. The ...
    • Synthesis of silver nanoparticles using aqueous leaf extract of mimosa albida (Mimosoideae): characterization ... 
      Pilaquinga, Fernanda; Amaguana, Dennis; Morey, Jeroni; Moncada-Basualto, Mauricio; Pozo Martínez, Josué; Olea Azar, Claudio; Fernández, Lenys; Espinoza Montero, Patricio; Jara Negrete, Elisa; Meneses, Lorena; López, Fernanda; Debut, Alexis; Piña, Nieves (MDPI, 2020)
      The search for sensitive and rapid analytical techniques for the determination of natural antioxidants is an area in constant growth due, among other aspects, to the complexity of plant matrices. In this study, silver ...
    • Synthesis of some C-3,4,5-substituted 2,6-dimethyl-1,4-dihydropyridines (4-DHPs) 
      Navarrete Encina, Patricio; Squella Serrano, Juan; Carbajo, J.; Conde, B.; Núñez Vergara, Luis (TAYLOR & FRANCIS INC, 2007)
      A series of C-3,4,5-substituted 2,6-dimethyl-1,4-dihydropyridines ( 1,4-DHPs) with pharmacological properties were prepared by a variation from the classical Hantzsch synthesis. The procedure involves treatment of the ...
    • Synthesis, binding assays, cytotoxic activity and docking studies of benzimidazole and benzothiophene ... 
      Romero Parra, Javier; Mella Ralpán, Jaime; Palmieri, Vittoria; Allara, Marco; Torres, María José; Pessoa Mahana, Hernán; Iturriaga-Vásquez, Patricio; Escobar, Rossy; Faúndez, Mario; Di Marzo, Vincenzo; Pessoa Mahana, Carlos David (Elsevier, 2016)
      Herein we report the design, synthesis, bioinformatic and biological studies of benzimidazole and benzothiophene derivatives as new cannabinoid receptor ligands. To test the hypothesis that the lack of a hydrogen bond ...
    • Synthesis, characterization and antibacterial activity of cobalt(III) complex with phenanthroline and maltose 
      Parada Aliste, José; Atria Salas, Ana María; Wiese, Guillermo; Rivas, Elizabeth; Corsini, Gino (Soc Chilena Química, 2014)
      The mononuclear cobalt(III) complex derived from 1,10-phenanthroline and maltose ([Co(phen)(2)maltose]Cl-2 center dot 3H(2)O) (1) has been synthesized and characterized in aqueous solution. Its characterization was based ...
    • Synthesis, characterization and in vitro antifungal elevation of novel benzimidazo [1,2-c]quinazolines 
      Insuasty, B.; Torres, H.; Quiroga, J.; Abonia, R.; Rodríguez, R.; Nogueras, M.; López Sánchez, A.; Saitz Barría, Claudio; Alvarez, S. L.; Zacchino, Susana (Sociedad Chilena de Química, 2006)
      The synthesis of a series of new benzimidazo [1,2-c]quinazolines starting from 2-nitrobenzaldehyde and o-phenylendiamine is decsribe. The structure elucidation of the products is based on detailed NMR analysis of experiments ...
    • Synthesis, characterization and in vitro antifungal evaluation of novel benzimidazo [1,2-c]quinazolines 
      Insuasty, B. A.; Torres, H.; Quiroga, J.; Abonía, R.; Rodríguez, R.; Nogeras, M.; Sánchez, A.; Saitz, C.; Alvarez, S. L.; Zacchino, S. A. (2006)
      The synthesis of a series of new benzimidazo[1,2-c]quinazolines starting from 2-nitrobenzaldehyde and o-phenylendiamine is described. The structure elucidation of the products is based on detailed NMR analysis of experiments ...
    • Synthesis, characterization and in vitro antifungal evaluation of novel benzimidazo[1,2-c]quinazolines 
      Insuasty, B. A.; Torres, H.; Quiroga, J.; Abonia, R.; Rodríguez, R.; Nogeras, N.; López Sánchez, Ángel R.; Saitz Barría, Claudio; Alvarez, S. L.; Zacchino, Susana (SOCIEDAD CHILENA DE QUIMICA, 2006-06)
      The synthesis of a series of new benzimidazo[1,2-c]quinazolines starting from 2-nitrobenzaldehyde and o-phenylendiamine is described. The structure elucidation of the products is based on detailed NMR analysis of experiments ...
    • Synthesis, characterization and structure of tribromo(2-phenyl-1,8- naphthyridine)gold(III) 
      Schmidt, Ricardo; Moya, Sergio A.; Aguirre, Pedro; Fuentealba, Mauricio; Leboschka, Markus; Sieger, Monika; Niemeyer, Mark; Kaim, Wolfgang (Verlag der Zeitschrift fur Naturforschung, 2011)
      Neutral tribromo(2-phenyl-1,8-naphthyridine)gold(III), AuBr 3(N-N), has been prepared by reaction of KAuBr4 with the ligand in CHCl3/C2H5OH and was characterized by 1H NMR spectroscopy and X-ray diffraction. The molecular ...
    • Synthesis, Characterization, and In Vitro Cytotoxic Activities of Benzaldehyde Thiosemicarbazone Derivatives ... 
      Hernández, Wilfredo; Paz, Juan; Vaisberg, Abraham; Spodine Spiridonova, Evgenia; Richter, Rainer; Beyer, Lothar (HINDAWI PUBLISHING CORPORATION, 2008)
      The palladium (II) bis-chelate Pd (L1-3)(2) and platinum (II) tetranuclear Pt-4(L-4)(4) complexes of benzaldehyde thiosemicarbazone derivatives have been synthesized, and characterized by elemental analysis and IR, FAB(+)-mass ...
    • Synthesis, crystal structure and magnetic properties of diaquabis(2,6-diamino-7H-purin-1-ium-kappa N-9)bis(4,4 ... 
      Atria Salas, Ana María; Parada Aliste, José; Moreno, Yanko; Suarez, Sebastián; Baggio, Ricardo; Peña, Octavio (International Union of Crystallography, 2018)
      The title mononuclear Co-II complex, [Co(C5H7N6)(2)(C14H8O5)(2)(H2O)(2)]center dot 2H(2)O, has been synthesized and its crystal structure determined by X-ray diffraction. The complex crystallizes in the triclinic space ...
    • Synthesis, docking and pharmacological evaluation of novel homo- and hetero-bis 3-piperazinylpropylindole ... 
      Pessoa Mahana, Hernán; González Lira, Christian; Fierro, Angélica; Zapata Torres, Gerald Amilcar; Pessoa Mahana, Carlos David; Ortiz Severin, Javiera; Iturriaga-Vásquez, Patricio; Reyes Parada, Miguel; Silva Matus, Paul; Saitz Barría, Claudio; Araya Maturana, Ramiro (Elsevier, 2013)
      A series of 3-(3-(4-(3-(1H-indol-3-yl)propyl)piperazin-1-yl)propyl)-1H-indole derivatives (3a–d and 5a– f) as homo- and hetero-bis-ligands, were synthesized and evaluated for in vitro affinity at the serotonin transporter ...
    • Synthesis, docking studies and biological evaluation of benzo[b]thiophen-2-yl-3-(4-arylpiperazin-1-yl)-propan-1-one ... 
      Pessoa Mahana, Hernán; Recabarren Gajardo, Gonzalo Iván; Temer, Jenny Fiedler; Zapata Torres, Gerald; Pessoa Mahana, Carlos David; Barría, Claudio Saitz; Araya Maturana, Ramiro (2012)
      A series of novel benzo[b]thiophen-2-yl-3-(4-arylpiperazin-1-yl)-propan-1- one derivatives 6a-f, 7a-f and their corresponding alcohols 8a-f were synthesized and evaluated for their affinity towards 5-HT 1A receptors. The ...
    • Synthesis, Docking Studies and Biological Evaluation of Benzobthiophen-2-yl-3-(4-arylpiperazin-1-yl)-propan-1-one ... 
      Pessoa Mahana, Hernán; Recabarren Gajardo, Gonzalo Iván; Fiedler Temer, Jenny; Zapata Torres, Gerald Amilcar; Pessoa Mahana, Carlos David; Saitz Barría, Claudio; Araya Maturana, Ramiro (2012)
      A series of novel benzobthiophen-2-yl-3-(4-arylpiperazin-1-yl)-propan-1-one derivatives 6a–f, 7a–f and their corresponding alcohols 8a–f were synthesized and evaluated for their affinity towards 5-HT1A receptors. The ...