Abstract
The alkaloidal components of the leaves and leaf stalks of Erythrina arborescens ROXB. (Leguminosae) were examined. The known Erythrina alkaloids, erysodine (I), erysotrine (X), and erythratidine (VI), a tetrahydrobenzylisoquinoline alkaloid, N-nororientaline (XIV), and a dibenz[d, f]azonine alkaloid, erybidine (XV), were isolated and identified. In addition, three new non-phenolic bases, which were named erytharbine (XVI), erysotramidine (XVII), and 1-1-hydroxyerysotrine (XVIII), were isolated and characterized.
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