Browsing by Author "Fajardo, Víctor"

Now showing items 1-5 of 5

    • CALAFATIMINE, A NEW IMINO BISBENZYLlSOQUINOLINE ALKALOID 
      Fajardo, Víctor; Garrido, Margarita; Cassels Niven, Bruce (ELSEVIER, 1980-10-13)
      A new bisbenzylisoquinoline alkaloid fran Berberis buxifolia was chemically correlated with ealafatine. On this basis, and using spectranetric evidence, structure 1is proposed for ealafatirnine. The stereochanistry ...
    • CALAFATINE, AN UNUSUAL BISBENZYLISOQUINOLINE ALKALOID 
      Fajardo, Víctor; Urzúa, Alejandro; Cassels Niven, Bruce (ELSEVIER, 1979-09-26)
      Spectrometric and chemical evidence is presented that calafatine, an alkaloid from Berberis buxifolia, has structure l. The substitution pattern on ring E is unique ln isoquinoline alkaloids.
    • CHILENINE: AN ISOINDOLOBENZAZEPINE ALKALOID 
      Fajardo, Víctor; Elango, Varadaraj; Cassels Niven, Bruce; Shamma, Maurice (Pergamon Press Ltd., 1981-09-24)
      If)-Chilenine (3), the first isoindolobenzazepine alkaloid, has been fou& in Berberis enpetrifolia Lam. IBerberidaceae).
    • CHlLENlNE: AN ISOINDOLOBENZAZEPlNE ALICALOID 
      Fajardo, Víctor; Elango, Varadaraj; Cassels Niven, Bruce; Shamma, Maurice (Pergarnon Press Ltd., 1981-09-24)
      (i:)-ChiZenine (3), the first isoindolobenaaaepine atkatoid, has been found in BerbeX'is empem[otia Lam. (Berberidaoeae).
    • Pyranosylmagellanicus a novel structural class of polyhalogenated acetogenins from Ptilonia magellanica 
      Lorenzo, Manuel; Cueto, Mercedes; San Martín Barrientos, Aurelio; Fajardo, Víctor; Darías, José (PERGAMON-ELSEVIER SCIENCE, 2005-10-03)
      Three naturally occurring pyranosyl-like polyhalogenated metabolites 1-3 as well as their likely biogenetic precursor, the linear compound 4, have been isolated from the red alga Ptilonia magellanica. They are the first ...