Browsing by Author "be972a1b-312f-41de-8d19-9f444b093619"

Now showing items 1-7 of 7

    • Biological activity of isoflavonoids from Azorella madreporica 
      Quesada, Luisa; Areche Medina, Carlos; Astudillo, Luis; Gutiérrez, Margarita; Sepúlveda, Beatriz; San Martín Barrientos, Aurelio (Natural Products, 2012)
      Four isoflavones, isolated from the whole plant of Azorella madreporica, were identified as angustone C (1), alpinumisoflavone (2), licoisoflavone A (3) and isolupalbigenin (4) by spectroscopic studies. The compounds were ...
    • Biotransformation of Stypotriol triacetate by Aspergillus niger 
      Areche, Carlos; Vaca Cerezo, Inmaculada; Labbe, Pamela; Soto Delgado, Jorge; Astudillo, Luis; Silva, Mario; Rovirosa, Juana; San Martín Barrientos, Aurelio (2011)
      Biological transformation of the meroditerpenoid, stypotriol triacetate (1) by the fungi Aspergillus niger, Cunninghamella elegans, Gibberella fujikuroi and Mucor plumbeus was studied. The incubation of 1 with A. niger ...
    • Determination of antibacterial, antioxidant, antiplatelet and inhibition of cholinesterase activities from ... 
      Quesada, Luisa; Gutiérrez, Margarita; Astudillo, Luis; San Martín Barrientos, Aurelio; Fuentes, Eduardo; Palomo, Iván; Peñailillo, Patricio (2013)
      In this study, we investigated the potential antibacterial, antioxidant and anti-platelet activities and the inhibition of cholinesterase from the methanolic extracts obtained from aerial parts of the two species of Azorella: ...
    • Halogenated monoterpenes of the red alga Shottera nicaensis 
      Cancino Rivera, Patricio Antonio; Astudillo, Luis; Rovirosa, Juana; San Martín Barrientos, Aurelio (1987)
    • New diterpenes from Azorella spinosa 
      Astudillo, Luis; Gutiérrez, Margarita; Quesada, Luisa; San Martín Barrientos, Aurelio; Espinoza, Luis; Peñailillo, Patricio (2014)
      Two new diterpenes,2-acetoxy-13-hydroxy-mulin-11-ene and 2-acetoxy-mulin-11, 13-diene,have been isolated from the aerial parts of Azorella spinosa and their structures determined by spectroscopic and conventional chemical ...
    • Synthesis and biotransformation of tetrahydroquinoline by Mortierella isabelina 
      Astudillo, Luis; De La Guarda, Waleska; Gutiérrez, Margarita; San Martín Barrientos, Aurelio (Verlag der Zeitschrift fur Naturforschung, 2009)
      Tetrahydroquinoline (1), prepared by a traditional synthetic method, the imino Diels-Alder reaction, was biotransformed by Mortierella isabelina to afford a new compound, 2, characterized by spectroscopic methods. © 2009 ...
    • Triterpenoids from Azorella trifurcata (Gaertn.) pers and their effect against the enzyme acetylcholinesterase 
      Areche, Carlos; Cejas, Patricia; Thomas, Pablo; San Martín Barrientos, Aurelio; Astudillo, Luis; Gutiérrez, Margarita; Loyola, Luis A. (Sociedade Brasileira de Quimica, 2009)
      The inhibition of the enzyme acetylcholinesterase is considered as a strategy for the treatment of Alzheimer's disease, senile dementia, ataxia, and myasthenia gravis. Three lanostane- and two cycloartane-type triterpenes, ...