Collect. Czech. Chem. Commun. 1980, 45, 1419-1423

Alkaloids from Strempeliopsis strempelioides K. SCHUM.

Abilio Lagunaa, Ladislav Dolejšb and Ladislav Novotnýb

a Phytochemistry Laboratory, National Center of Scientific Research, Havana, Cuba
b Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6


From the leaves of Strempeliopsis strempelioides K. SCHUM. (Apocynaceae), an indigenous species from Cuba, the following alkaloids were isolated: (+)-Demethylaspidospermine, (-)-aspidosine, (+)-tubotaiwine, (-)-vallesine, (+)-condylocarpine and (+)-eburnanomine. From stem bark of the plant the following alkaloids were isolated: (-)-Aspidospermine, (+)-deacetylaspidospermine, (+)-vincadifformine, (_)-apparicine, (+)-tubotaiwine, (+)-condylocarpine and (+)-demethylaspidospermine. All the structures were proposed on the basis of spectral evidence and chemical reactions.