Aspidosperma subincanum

Two specimens of Aspidosperma subincanum Mart, have been studied, one collected in Peru and the other in Brazil. The alkaloids isolated, although chemically related, were different with the exception of olivacine, which occurs in both. 

Subincanine, a pentacyclic carbazole alkaloid isolated from Aspidosperma subincanum, has been assigned structure (68b) as a working hypothesis, on the basis of its spectra, cleavage of the N-C-O system by reduction with sodium borohydride, and co-occurrence with alkaloids of the uleine (73b) type the portion of the molecule to the left of the dotted line has the same carbon skeleton... 

---