(3S,12aS)-5α-Ethyl-3,3aα,4,5,6,7,8,9,11,12-decahydro-4β-hydroxy-3-methyl-11α-[(2S,4S)-tetrahydro-4-methyl-5-oxofuran-2-yl]-2H-furo[3,2-i]pyrrolo[3,2,1-jk][1]benzazepin-2-one

This minor alkaloid obtained from several species of Sternona, particularly the roots of S. tuberosa, forms flat, shiny needles when crystallized from MeOH. The ultraviolet spectrum has a single absorption maximum at 243 mJ.1. The base remains in the mother liquor following the removal of Tuberostemonine (q.v.) and is soluble in most organic solvents although only sparingly so in Et20. It is insoluble in petroleum ether.

Kondo, Satomi, Odera., Ann. Rep. ITSUU Lab. (Tokyo), 5, 99 (1954)
Pailer, Belohlov., Monatsh., 85, 1055 (1954)
Edwards, Feniak, Honda., Can. J. Chern., 40,455 (1962)