A recent reinvestigation of the alkaloids present in the leaves of Tabernanthe
iboga and T. subsessilis has resulted in the isolation of two new bases, ibophyllidine
and iboxyphylline (q.v.). Ibophyllidine has been obtained as a non-crystallizable
solid having no definite melting point. It is dextrorotatory with a specific rotation
of [cd D + 1340 (c 1.0, CHCI3) and gives an ultraviolet spectrum in EtOH consisting
of absorption maxima at 227,302 and 333 nm. The structure has been deduced
primarily from a study of the ultraviolet and NMR spectra.
Khuong-Huu et aZ., Tetrahedron, 32, 2539 (1976)
