Die Konstitution der Melodinus‐Alkaloide (+)‐Meloscin, (+)‐Epimeloscin und (+)‐Scandin. 1. Mitteilung über Alkaloide aus Melodinus scandens F ORST

For the alkaloids meloscine, epimeloscine and scandine, isolated from the Apocynacee Melodinus scandens FORST., the structures 1, 10 and 11, respectively, are deduced. Scandine is proved to possess the relative configuration as shown in 11 r. For meloscine and epimeloscine the relative configurations as depicted in 1 r and 10 r are discussed.