Browsing by Title Artículos de revistas

Now showing items 2485-2504 of 2801

    • Synthesis of 4-arylpiperazine derivatives of moclobemide: Potential antidepressants with a dual mode of action 
      Pessoa Mahana, Hernán; Recabarren Gajardo, Gonzalo Iván; Araya Maturana, Ramiro; Kosche Cárcamo, Johann Albert; Pessoa, D. (MARCEL DEKKER INC, 2004-07)
      We report here the synthesis of substituted 4-chloro-N-[3-oxo-3-(4-aryl-1-piperazinyl)-propyl] benzamides (5-9), as potential new antidepressants, incorporating in a single molecule structural moieties related to a dual ...
    • Synthesis of a Novel Series of 4-Arylpiperazinyl Derivatives Linked to a 2-(Pyridin-3-yl)-1H-benzimidazole ... 
      Pessoa Mahana, David; Núñez, Andrés; Espinosa Bustos, Christian; Mella Raipán, Jaime A.; Pessoa Mahana, Hernán (2010)
      The synthesis of a series of substituted arylpiperazines linked to a 2-(pyridin-3-yl)-1H-benzo[d]imidazole scaffold through an alkylic linker is reported. The novel 1-(2-(4-arylpiperazin-1-yl)alkyl)-2-(pyridin-3-yl)-1H-b ...
    • Synthesis of a Novel Series of 4-Arylpiperazinyl Derivatives Linked to a 2-(Pyridin-3-yl)-1H-benzimidazole ... 
      Pessoa Mahana, David; Núñez, Andrés; Espinosa Bustos, Christian; Mella Raipán, Jaime A.; Pessoa Mahana, Hernán (2010)
    • Synthesis of aminonaphthalene derivatives using the Bucherer reaction under microwave irradiation 
      Cañete Molina, Alvaro Félix; Meléndrez Cancino, Mónica Ximena; Saitz Barría, Claudio; Zanocco Loyola, Antonio (MARCEL DEKKER INC, 2001)
      A very simple and efficient method to prepare aminonaphthalene derivatives in good yield using the Bucherer reaction under microwave irradiation in a closed vessel is described. A reaction time of 30 min at 150 Watts of ...
    • Synthesis of antiplatelet ortho-carbonyl hydroquinones with differential action on platelet aggregation ... 
      Méndez, Diego; Urra Faúndez, Félix; Millas Vargas, Juan Pablo; Alarcón, Marcelo; Rodríguez Lavado, Julio; Palomo, Iván; Trostchansky, Andrés; Araya Maturana, Ramiro; Fuentes, Eduardo (Elsevier, 2020)
      Cardiovascular diseases are the leading cause of death in the world. Platelets have a major role in cardiovascular events as they bind to the damaged endothelium activating and forming thrombi. Although some hydroquinone ...
    • Synthesis of benzo[b]thiophene carboxamides connected to 4-arylpiperazines through a benzylic spacer: ... 
      Pessoa Mahana, Hernán; Acevedo Ramos, Armando Rodrigo; Araya Maturana, Ramiro; Saitz Barría, Claudio; Pessoa, D. (TAYLOR & FRANCIS INC, 2007)
      New benzothiophene arylpiperazine derivatives 8 (a-f) were synthesized as potential serotoninergic agents with 5-HT1A receptor affinity. Preparation of the derivatives was performed by treating N-[2-(chloromethyl)phenyl] ...
    • Synthesis of bifunctional receptor for fluoride and cadmium based on calix[4]arene with thiourea moieties 
      Quiroga Campano, Cinthia del Rosario; Gómez Machuca, Horacio Exequiel; Moris, S.; Jara, P.; Fuente, Julio de la; Pessoa Mahana, Hernán; Jullian Matthaei, Carolina; Saitz, C. (Elsevier, 2017)
      A new calix[4]arene thiourea derivative bearing a benzothiazolyl moiety (L) was synthetized and characterized by single crystal X-ray, NMR and ESI-TOF. The binding ability of the bifunctional receptor towards several ions ...
    • Synthesis of bridged thiourea calix-sugar 
      Torres Pinedo, Antonio; Santoyo González, Francisco; Saitz Barría, Claudio (GEORG THIEME VERLAG, 1999-12)
      The effective synthesis of a variety of bisthiourea-bridged calix[4]arenes substituted by carbohydrates units (D-glucose, D-mannose, D-galactose and lactose) at the narrow rim by reaction of bis(aminoethoxy)calix[4]arene ...
    • Synthesis of calix[4]arenes bearing benzothiazolyl, benzoxazolyl and benzoimidazolyl heterocycles 
      Saitz Barría, Claudio; Fuente, J. de la; Jullian Matthaei, Carolina; Pessoa Mahana, Hernán; Olea, Carolina (SCIENCE REVIEWS LTD, 2008-06)
      A novel series of calix[4]arenes bearing benzothiazole, benzoxazole, and benzoimidazole groups were obtained by the reaction of the corresponding 2-mercaptoheterocycle with 5,11,17,23-tetra-tert-butyl-25,27-bis[2-(chloroacetamido) ...
    • Synthesis of conformationally restricted N-{4-[4-(4,7-Dimethoxy-Benzo[b]Thiophene-2-Carbonyl)-1-Piperazin ... 
      Pessoa Mahana, Hernán; González Lira, Christian Guillermo; Araya Maturana, Ramiro; Saitz Barría, Claudio; Pessoa, D. (SOC CHILENA QUIMICA, 2009-06)
      New benzothiophene arylpiperazine derivatives 7 (a-1) were synthesized as potential serotoninergic agents with 5-HT1A receptor affinity. Preparation of the derivatives was performed by reaction of 1-(4-aminophenyl)-4-[(4 ...
    • Synthesis of EPA- and DHA-enriched structured acylglycerols at the sn-2 position starting from commercial ... 
      Dovale Rosabal, Gretel; Rodríguez Melis, Alicia; Espinosa Escalona, Berta Alejandra; Barriga Pinto, Gonzalo Andrés; Aubourg Martín, Santiago Pedro (MDPI, 2021)
      There is consistent evidence that long-chain polyunsaturated fatty acids (LCPUFA) belonging to the n-3 series, i.e., eicosapentaenoic (20:5n-3, EPA) and docosahexaenoic (22:6n-3, DHA) acids, decrease the risk of heart, ...
    • Synthesis of fluorinated graphene oxide by using an easy one-pot deoxyfluorination reaction 
      Aguilar Bolados, Héctor; Contreras Cid, Ahirton; Yazdani-Pedram Zobeiri, Mehrdad; Acosta Villavicencio, Gabriela; Flores Carrasco, Marcos; Fuentealba, Pablo; Neira Carrillo, Andrónico; Verdejo, Raquel; López Manchado, Miguel (Elsevier, 2018-08-15)
      The fluorination of two types of graphene oxides conducted by an easy and scalable deoxyfluorination reaction is reported. This reaction was carried out using diethylaminodifluorosulfinium tetrafluoroborate, a stable ...
    • 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 ...