Alcaloïdes des feuilles et écorces de tronc d'Alstonia odontophora

Abstract Six known indole alkaloids were isolated from the leaves and stem bark of Alstonia odontophora : vincamajine, 11-methoxy- akuammicine, quebrachidine, pleiocarpamine, antirhine, pleiocorine and pleiocraline, along with the novel bisindole, N (I′)-demethylpleiocorine.