Browsing by Author "Zenk, Meinhart H."

Now showing items 1-3 of 3

    • BISBENZYLISOQUINOLINE ALKALOIDS IN BERBERIS CELL CULTURES 
      Cassels Niven, Bruce; Breitmaier, Eberhard; Zenk, Meinhart H. (Pergamon Journals Ltd., 1986-07-08)
      Callus cultures of 34 Berberís celllines representing 33 species were screened for alkaloids using TLC and HPLC. Jatrorrhizine was always found to be a major constituent; two B. stolonifera lines were the richest ...
    • BISBENZYLISOQUINOLINE BIOSYNTHESIS IN BERBERIS STOLONIFERA CELL CUL TURES 
      Stadler, Richard; Loeffler, Susane; Cassels Niven, Bruce; Zenk, Meinhart H. (Pergamon Press plc., 1988-01-27)
      Bisbenzylisoquinoline alkaloid-producing cell cultures of Berberis stolonifera were fed with 14C-Iabelled tyrosine, tyramine, and several chiral l-benzyl-l,2,3,4-tetrahydroisoquinolines. Berbamunine subsequently isolated from ...
    • REVISION OF THE EARLY STEPS OF RETlCULlNE BlOSYNTHESlS 
      Stadler, R.; Kutchan, T. M.; Loeffler, S.; Nagakura, N.; Cassels Niven, Bruce; Zenk, Meinhart H. (Pergamon Journals Ltd., 1986-12-18)
      Precursor feeding experiments to Annona reticulata leaves demonstrated that coclaurine and reticuline are both derived from the common lntermediate norcoclaurine; furthermore (S)-coclaurlne was found to be the speciflc ...