This alkaloid has been discovered, as a major component, in the extract from
Abuta spendida where it occurs with aromoline and homoaromoline. Chemical
and spectroscopic studies have given the above bisbenzylisoquinoline structure
for krukovine.
The root stems of Pycnarrhena longifolia yield this bisbenzylisoquinoline alkaloid.
Saaetal.,l. Org. Chem., 41, 317 (1976)
