Browsing by Author "Urzúa, Alejandro"

Now showing items 1-6 of 6

    • ADDITIONAL ALKALOIDS FROM LAURELIA PHILIPPIANA AND L. NOVAE-ZELANDIAE 
      Urzúa, Alejandro; Cassels Niven, Bruce (Pergamon Press Ltd., 1981-07-22)
      Asimilobine. anonaine. noreorydine. nornantenine. (+)-reticuline and lhe new alkaloid. 4-hydroxyanonaine. were isolaled from Laur~litJpllilippialla bark. The biogenelically relaled obovanine. oxopulerine and (-)-romneine. ...
    • alcaloides de laurelia sempervirens y l. philippiana 
      Urzúa, Alejandro; Comin, J.; Cassels Niven, Bruce; Sánchez, E. (Universidad Técnica del Estado (Chile). Dirección de Investigaciones Científicas y Tecnológicas, 1978-01)
      De las cortezas de tronco de Laurelia sempervirens (R. et Pav.) TUL y de Laurelia philippiana. Looser fueron aislados e identificados los siguientes alcaloides: liriodenina (I),oxorantenina ( II ), ...
    • Alkaloid Chemosysternatics, Chernotaxonorny and Biogenesis in the Atherospernataceae 
      Urzúa, Alejandro; Cassels Niven, Bruce (American Society of Pharmacognosy, 1977-10-03)
    • BISBENZYLISOQUINOLINE ALKALOIDS OF LA URELZA SEMPERVZRENS 
      Cassels Niven, Bruce; Urzúa, Alejandro (American Chemical Society, 1985-01-21)
      The stem bark of Laurelia sempervirens R. et P. (Monimiaceae, subfamily Atherospermoideae) is a rich source of aporphinoids and has also been shown to contain a complex mixture of unidentified bisbenzylisoquinolines (1). ...
    • 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.
    • Fate of Ingested Aristolochic Acids in Battus archidamas 
      Urzúa, Alejandro; Rodríguez, Ronald; Cassels Niven, Bruce (Pergamon Journals Ltd., 1987-01-25)
      8attus archidamas larvae reared on Aristolochia chilensis sequester aristolochic acids selectively and independently of lipophilícíty. A considerable proportion of the ingasted acids can be recovered from the excreta, but ...