Now showing items 1726-1745 of 2801

    • Gajardo, Juana; Araya, Juan C.; Moya, Sergio A.; Pardey, Alvaro J.; Guerchais, Veroniqué; Le Bozec, Hubert; Aguirre, Pedro (2006)
      This work shows the synthesis and characterization of new carbonyl complexes derived of 1,8-naphthyridine. Covalently bonded complex can be successfully employed in building of supramolecular structures. Copyright © 2005 ...
    • Gajardo, Juana; Araya, Juan Carlos; Moya, Sergio A.; Pardey, Alvaro J.; Guerchais, Veronique; Le Bozec, Hubert; Aguirre Álvarez, Pedro (JOHN WILEY & SONS, 2006-04)
      This work shows the synthesis and characterization of new carbonyl complexes derived of 1,8-naphthyridine. Covalently bonded complex can be successfully employed in building of supramolecular structures.
    • Rodríguez Borges, Jorge; Arán, Vicente J.; Boiani, Lucía; Olea Azar, Claudio; Lavaggi, María Laura; González, Mercedes; Cerecetto, Hugo; Diego Maya, Juan; Carrasco Pozo, Catalina; Speisky Cosoy, Hernán (PERGAMON-ELSEVIER SCIENCE LTD, 2009-12-15)
      New 5-nitroindazole derivatives were developed and their antichagasic properties studied. Eight compounds (14-18, 20, 26 and 28) displayed remarkable in vitro activities against Trypanosoma cruzi (T. cruzi). Its unspecific ...
    • Faúndez Parraguez, Manuel; Alarcón Miranda, Carlos; Cho, Young Hwa; Pessoa Mahana, Hernan Armando; Gallardo Garrido, Carlos; Chung, Hery; Faúndez, Mario; Pessoa Mahana, David (MDPI, 2021)
      The activation of the human cannabinoid receptor type II (CB2R) is known to mediate analgesic and anti-inflammatory processes without the central adverse effects related to cannabinoid receptor type I (CB1R). In this work ...
    • Manríquez Castro, Víctor; Galdámez Silva, Antonio; Guzmán Águila, Daniela (Elsevier, 2008)
      A new quaternary alkali metal, rare earth thiophosphate was synthesized by the ceramic method and characterized by single crystal X-ray diffraction: K2SmP2S7 crystallizes in the monoclinic space group C2 (no. 5) with the ...
    • Campanini Salinas, Javier Andrés; Andrades Lagos, Juan Andrés; Hinojosa Torres, Nicolás Antonio; Moreno Ruz, Fabián Eduardo; Alarcón, Pedro; González Rocha, Gerardo; Burbulis, Ian E.; Vásquez Velásquez, David (MDPI, 2021)
      There is an urgent need for the development of new antibiotics. Here, we describe the inhibitory activity of new quinone compounds against methicillin-resistant Staphylococcus aureus (ATCC(R) 43300), methicillin-sensitive ...
    • Cañas, Alejandro; Valdebenito, Samuel; Richter Duk, Pablo (Microextraction Techniques, 2014)
      A novel extraction approach was developed based on rotating-disk sorptive extraction (RDSE). In this approach the rotating-disk extraction device consists of a Teflon disk, with a cavity that is loaded with a commercial ...
    • Kozlovsky, M. V.; Soto Bustamante, Eduardo; Haase, W. (TAYLOR & FRANCIS LTD, 1996-01)
      A synthetic route has been developed to a new series of homo- and co-polysiloxanes with a terminal chiral 2-(S)-butyl fragment attached to the mesogenic biphenyl core via the ketone binding group, >C=O. The synthesis, ...
    • Araya, Juan Francisco; Aliaga, Juan Antonio (Magnolia Press, 2015)
    • Saitz Barría, Claudio; Rodríguez, H.; Márquez, Amelia; Cañete, Alvaro; Jullian Matthaei, Carolina; Zanocco Loyola, Antonio (MARCEL DEKKER INC, 2001)
      A method that allows the synthesis of 4 different heterocyclic systems of fused aryl oxazoles, i.e., naphtho[1,2-d], naphtho[2,1-d], naphtho[2,3-d], and benzo[d]oxazoles in reasonable yield is del scribed. This method ...
    • Mujica, ML; Gallay, PA; Perrachione, F; Montemerlo, AE; Tamborelli, LA; Vaschetti, VM; Reartes, DF; Bollo, S; Rodriguez, MC; Dalmasso, PR; Rubianes, MD; Rivas, GA (Elsevier B.V., 2020)
    • Porcal, Williams; Hernández, Paola; Boiani, Lucía; Boiani, Mariana; Ferreira, Ana; Chidichimo, Agustina; Cazzulo, Juan J.; Olea Azar, Claudio; González, Mercedes; Cerecetto, Hugo (Elsevier Ltd, 2008-07)
      Hybrid compounds containing hydrazones and benzofuroxan pharmacophores were designed as potential Trypanosoma cruzi-enzyme inhibitors. The majority of the designed compounds was successfully synthesized and biologically ...
    • Cornwell, E. (SOCIEDAD CHILENA DE QUIMICA, 2000-12)
      A new vector (V-c) is proposal for structure the topological index of H. P. Schultz (2-MTI). This vector contain elements that correspond to the electron charge density soported on the carbon atoms of the molecule and ...
    • Paredes, Aaron J.; Naranjo-Palma, Tatiana; Alfaro-Valdés, Hilda M.; Barriga, Andrés; Babul Cattán, Jorge; Wilson, Christian A.M. (Academic Press Inc., 2017)
      © 2016 Elsevier Inc.DNA staining in gels has historically been carried out using silver staining and fluorescent dyes like ethidium bromide and SYBR Green I (SGI). Using fluorescent dyes allows recovery of the analyte, but ...
    • Barrientos, C; Navarrete-Encina, P.A.; Carbajo, J.; Squella Serrano, Juan (Springer, 2018)
      Here, we reveal a different way of doing the voltammetric experiments that considers the electroactive species packaged in the electrodic phase instead of dissolved in solution. In this way, it is possible to obtain ...
    • Rodríguez Llamazares, Saddys; Merchán, Juan; Olmedo, Ivonne; Marambio, Héctor; Muñoz, Juan; Jara, Paul; Sturm, Juan; Chornik, Boris; Peña, Octavio; Yutronic Sáez, Nicolás; Kogan Bocian, Marcelo (2008)
      A new synthesis and stabilization method was developed for paramagnetic nanoparticles composed of nickel and nickel oxides. Nickel/nickel oxides nanoparticles were synthesized by a method based on ligand displacement of ...
    • Castillo, C.; Seguin, K.; Aguirre Álvarez, Pedro; Venegas Yazigi, Diego; Viegas, A. D. C.; Spodine Spiridonova, Evgenia; Paredes García, Verónica (Royal Soc Chemistry, 2015)
      In this study, we are reporting the synthesis and characterization of nanocomposites obtained from the direct reduction of nickel(II) salts on matrices of polyethylene (Pe) and chitosan (Ch) in the presence of serine ...
    • Cáceres Jensen, Lizethly; Rodríguez Becerra, Jorge; Escudey, Mauricio; Joo-Nagata, Jorge; Villagra, Cristian A.; Domínguez Vera, Valentina; Neira Albornoz, Angelo; Cornejo Huentemilla, Maribel (Elsevier, 2020)
      Nicosulfuron sorption/desorption kinetics were studied through batch sorption studies in ten volcanic ash-derived Andisol and Ultisol soils with acidic pH and variable surface charge. Two different kinetic models were used ...
    • Pizarro Urzúa, Nancy A.; Núñez Vergara, Luis (ELSEVIER SCIENCE SA, 2005-10-31)
      The ability to generate singlet molecular oxygen, O-2((1)Delta(g)), and the scavenging activity of two well-known 1,4-dihydropyridines (1,4-DHPs) such as nifedipine (1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridin ...
    • Squella Serrano, Juan; Barnafi, E.; Perna, S.; Núñez Vergara, Luis (1989)
      A method for the differential-pulse polarographic determination of nifedipine has been developed, based on the electrochemistry of the aromatic nitro group in the drug. Polarography has also been used in studies of the ...