van Beek T A, de Smidt C, Verpoorte R
J Ethnopharmacol. 1985 Nov-Dec;14(2-3):315-8. doi: 10.1016/0378-8741(85)90096-0.
From the stembark of Tabernaemontana crassa the alkaloid ibogaine was isolated as the major component. Ibogaine showed activity against the gram-positive Bacillus subtilis. Conopharyngine was identified as one of the minor compounds.