A reinvestigation of the alkaloid content of Tabernaernontana accedens has resulted
in the isolation of three new alkaloids, accedinine, accedinisine and N-demethyl_x0002_voacamine. Accedinine forms a colourless oil with no definite boiling point. It is
laevorotatory having a specific rotation of [α]D20 - 81 ° (c 0.7, CHCI3). The ultraviolet spectrum in EtOH is indicative of indole bases with absorption maxima at
231, 286 and 293 nm. The dimeric structure given has been assigned primarily on
the basis of the NMR spectrum.
Achenbach, Schaller, Chern. BeT., 109,3527 (1976)
