Browsing by Author "ed62e0a1-d6b1-4461-a189-c1510b831890"

Now showing items 1-9 of 9

    • Antioxidant activity of coumarins and flavonols from the resinous exudate of Haplopappus multifolius 
      Torres, René; Faini, Francesca; Modak, Brenda; Zúñiga Urbina, Francisco; Labbé, Cecilia; Guerrero, Juan (PERGAMON-ELSEVIER SCIENCE LTD, 2006-05)
      The antioxidant activity of eight coumarins and two flavonols isolated from Haplopappus multifolius was studied with the DPPH radical method. Results show that a high concentration of phenolic coumarins and the presence ...
    • Bakuchiol derivatives from the leaves of Psoralea glandulosa 
      Labbé, Cecilia; Faini, Francesca; Coll, Joseph; Connolly, Joseph D. (Elsevier Ltd, 1996)
      Four new meroterpene derivatives have been isolated in a bioassay- guided study of the methanol extract of the leaves of Psoralea glandulosa, in addition to the known compounds bakuchiol and angelicin. Structures for the ...
    • Chemical Composition of the Essential Oil from Fresh Leaves of Satureja gilliesii (Grah.) Briq. 
      Vila, Roser; Milo, Begoña; Cañigueral, Salvador; Adzet, Tomás; Labbé, Cecilia; Muñoz Muñoz, Orlando (1996)
      Essential oil, obtained by hydrodistillation, from fresh leaves of Satureja gilliesii (Grah.) Briq. (Lamiaceae), which is an endemic species of Chile, was analyzed by GC and GC/MS. The major constituents were the oxygenated ...
    • Chemical composition of two samples of essential oil of satureja boliviana (Benth.) Briq. from Peru and Bolivia 
      Vila, Roser; Milo, Begoña; Labbé, Cecilia; Muñoz Muñoz, Orlando; Soria, Emma Urrunaga; Soria, Rosa Urrunaga (1996)
      The essential oils of two samples of Satureja boliviana (Benth.) Briq. collected in Peru and Bolivia, were obtained by hydrodistillation, and analyzed by capillary GC and GC/MS. The major constituents of the Peruvian oil ...
    • Diterpenes from Haplopappus chrysanthemifolius 
      Faini, Francesca; Labbé, Cecilia; Torres, René; Delle Monache, Franco; Delle Monache, Giuliano (1999)
      Three new diterpenes were isolated from the aerial part of Haplopappus chrysanthemifolius and assigned the structures 6α-hydroxy-ent-labd-8(17)-en- 15-oic acid, 3β-acetoxy-ent-labd-8(17)-en-15-oic acid and 18α-acetoxylabd- ...
    • Diterpenoids from chilean Baccharis species 
      Labbé, Cecilia; Faini, Francesca; Castillo, Mariano (1990)
      Two new ent-labdanes were isolated from the leaves of Baccharis paniculata. The results of a chemical study of other three Baccharis species are reported. © 1990.
    • New phenolic esters from the resinous exudate of Haplopappus taeda 
      Faini, Francesca; Labbé, Cecilia; Torres, René; Rodilla, Jesús M.; Silva, Lucía; Monache, Franco Delle (2007)
      Two new phenolic esters 9-trans-p-coumaroyloxy-α-terpineol (1) and 7-trans-p-coumaroyloxy-taedol (2), both endowed with free radical scavenger activity and cleroda-3,13 (E)-dien-15,18-diol (3) for which a cis stereochemistry ...
    • Rearranged isopimarenes and other diterpenoids from Satureja gilliesii 
      Labbé, Cecilia; Castillo, Mariano; Faini, Francesca; Coll, Josep; Connolly, Joseph D. (1994)
      Seven new diterpenoids, a labdane, three isopimarenes and three rearranged isopimarenes, have been isolated from the flowering tops of Satureja gilliesii. Their structures are based on their spectroscopic properties and, ...
    • Variations of carnosic acid and carnosol concentrations in ethanol extracts of wild lepechinia salviae in ... 
      Labbé, Cecilia; Faini, Francesca; Calderón, Daniela; Molina, Juanita; Arredondo, Susana (Natural Product Incorporation, 2014)
      Ethanol extracts from dried leaves of wild Lepechinia salvia (Lindl) Epling, collected during the flowering period (September-November), contained 15% to 25% carnosic acid and 2 to 8% carnosol, depending on the month of ...