Recent studies on the elucidation of the structures and stereochemistry of the Alangium alkaloids ankorine, alangicine, alangimarckine, desmethylpsychotrine, demethyltubulosine, and 10-demethylprotoemetinol by stereospecific synthesis have been reviewed. In these studies, the target molecules have been synthesized by the "lactim ether method" invented for the racemic series and by the "cincholoipon-incorporating method" for the chiral series. The syntheses of emetine, 9-demethylcephaeline, 10demethylcephaeline, and 9-demethylprotoemetinol by the latter method and the results of some preliminary studies have been also summarized.