N-Oxides of the oxindole alkaloids, isorhynchophylline, rhynchophylline, rhynchociline and ciliaphylline

N-Oxides of the oxindole alkaloids, isorhynchophylline, rhynchophylline, rhynchociline and ciliaphylline THE MITRAGYNA SPECIES OF ASIA Oxindole alkaloids from Uncaria macrophylla Studies of Plants containing Indole Alkaloids. (2). On the Alkaloids of Uncaria rhynchophylla MIQ Three New Alkaloids from the Leaves of Uncaria rhynchophylla THE ALKALOIDS OF MITRAGYNA ROTUNDIFOLIA. I Rotundifoline N-oxides The Mitragyna Species of Ghana Three New Alkaloids from the Leaves of <i>Uncaria rhynchophylla</i> Alkaloids from the Leaves of <i>Uncaria rhynchophylla</i> and Their Inhibitory Activity on NO Production in Lipopolysaccharide-Activated Microglia