Eight alkaloids were isolated from the leaves of Alangium bussyanum, six of which were known, viz. tubulosine, 9-desmethyltubulosine, deoxydesmethyltubulosine, O-methyltubulosine, deoxytubulosine and 9- or 10-desmethylprotoemetinol. The two other alkaloids were new and their structures were established as alangiobussine and alangiobussinine by spectroscopic and chemical methods.