Picropodophyllin is a cyclolignan alkaloid found in the mayapple plant family (Podophyllum peltatum), and a small molecule inhibitor of the insulin-like growth factor 1 receptor (IGF1R) with potential antineoplastic activity.

Acetylcorynoline may be one of the potent immunosuppressive agents through the blockage of dendritic cells maturation and function.

Lotusine is a pure alkaloid extracted from the Nelumbo nucifera Gaertn. It shows effects on the action potentials in the myocardium and slow inward current in cardiac Purkinje fibers.