Browsing by Author "738931d6-2058-4357-bce7-01ec45f884cd"

Now showing items 1-6 of 6

    • A study about regioisomeric hydroquinones with multiple intramolecular hydrogen bonding 
      Martínez Cifuentes, Maximiliano; Cardona, Wilson; Saitz Barría, Claudio; Weiss López, Boris; Araya Maturana, Ramiro (MDPI AG, 2017)
      A theoretical exploration about hydrogen bonding in a series of synthetic regioisomeric antitumor tricyclic hydroquinones is presented. The stabilization energy for the intramolecular hydrogen bond (IHB) formation in four ...
    • Complete assignment of the 13C NMR spectra of 4,4-dimethylanthracene-1,9,10(4H)-trione and the regioisomeric ... 
      Araya Maturana, Ramiro; Cardona, Wilson; Delgado Castro, Tomás; Jullian Matthaei, Carolina (2000)
      The 1H and 13C NMR spectra of a set of structurally related tricyclic quinones consisting of 4,4-dimethylanthracene-1,9,10(4H)-trione (1), 4,4,6,7-tetramethylanthracene-1,9,10(4H)-trione (2) and the regioisomers 4,4,5-(3), ...
    • Ionic liquids intercalated in montmorillonite as the sorptive phase for the extraction of low-polarity ... 
      Fiscal-Ladino, Jhon A.; Obando-Ceballos, Mónica; Rosero-Moreano, Milton; Montaño, Diego F.; Cardona, Wilson; Giraldo, Luis F.; Richter Duk, Pablo (Elsevier B.V., 2017)
      © 2016 Elsevier B.V. Montmorillonite (MMT) clays were modified by the intercalation into their galleries of ionic liquids (IL) based on imidazolium quaternary ammonium salts. This new eco-materials exhibited good features ...
    • NMR assignment in regioisomeric hydroquinones 
      Dobado, Jose A.; Gómez-Tamayo, José C.; Calvo-Flores, Francisco G.; Martínez-García, Henar; Cardona, Wilson; Weiss López, Boris; Ramírez Rodríguez, Oney; Pessoa Mahana, Hernán; Araya Maturana, Ramiro (2011)
      A set of regioisomeric pairs of tricyclic hydroquinones, analogues of antitumor 9,10-dihydroxy-4,4-dimethyl-5,8-dihydroanthracen-1(4H)-one (1) and other derivatives, were synthesized and their regiochemistry and NMR spectra ...
    • Remote regio- and stereocontrol by the sulfinyl group: Diels-Alder reaction of sulfinyl dienols and ... 
      Almodovar, Iriux; Cardona, Wilson; Delgado Castro, Tomás; Zapata Torres, Gerald; Caroli Rezende, Marcos; Araya Maturana, Ramiro; Maestro, M. Carmen; García Ruano, José L. (2013)
      Diels-Alder cycloaddition of 8,8-dimethylnaphthalene-1,4,5(8H)-trione with diastereomeric hydroxysulfinyldienes proceeded with high yields and good π-facial and regioselectivities. The hydroxysulfoxide moiety controls the ...
    • Theoretical assessment of antioxidant property of polyproponoid and its derivatives 
      Anbazhakan, K.; Sadasivam, K.; Praveena, R.; Salgado, Gullermo; Cardona, Wilson; Glossman Mitnik, Daniel; Gerli, Lorena (Structural Chemistry, 2020)
      Derivatives of parent molecules possess similar structural activity which makes them to be the topic of equal interest. In the present work, a naturally occurring acid eugenol and its co derivatives allyl-2-methoxy-4-nitrophenol ...