On the absolute configuration of sedamine and sedridine: (Preliminary communication)

Abstract
The resolution of (±)‐allo‐sedamine into its optical components and of (±)‐sedridine yielding (+)‐sedridine is recorded.An alkaloid of undetermined constitution previously obtained from Lobelia inflata L. by H. Wieland et al. seems identical with one of the enantiomorphs of (±)‐allo‐sedamine.The determination of the absolute configuration of the piperidine part of the alkaloids sedamine, allo‐sedamine and sedridine is described. The results agree with the conception of the biosynthesis of (‐) ‐sedamine and (+)‐sedridine from L‐amino‐acids.