This alkaloid from Vinca erecta Rgl. et Schmalh does not appear to be identical
with that isolated from Aspidosperma duckei Hub. and A. macrocarpa Mart. This
base is reported to have a specific rotation of [C\' 1 D + 98.6° (c 0.18, CHCI3). The
structure has been assigned on the basis of chemical and spectroscopic evidence.
Rakhimov et al., Khim. Prir. Soedin., 6, 713 (1970)
