Chemical composition of the pods of Albizia polyphylla.

AbstractIn this study, we report for the first time the presence of alkaloids belonging to β-carboline type in the pods of the endemic Albizia polyphylla from Madagascar. Three major alkaloids were isolated and structurally identified as: 1-methyl-β-carboline, (+)-(R)-1-methyl-1,2,3,4-tetrahydro-β-carboline and (–)-(S)-1,2-dimethyl-1,2,3,4-tetrahydro-β-carboline.