Se. Elgengaihi et al., CHEMICAL AND BIOLOGICAL INVESTIGATION OF HARMAL PLANT .2. ALKALOIDAL INVESTIGATION, Journal of applied entomology, 121(3), 1997, pp. 165-167
An enriched alkaloidal fraction from harmal seeds was prepared as iodi
de derivative, and fractionated by preparative TLC. Three compounds we
re obtained: harmine, harmaline and harmalol. The biological activity
of the iodide derivative and the three compounds were assessed on the
cotton leaf worm. Correlation between the biological activity and chem
ical structure was postulated.