Ursonic acid belongs to the family of Ursane Triterpenes whose structure is based on the pentacyclic ursane skeleton. It has potential as HIV-1 Protease Inhibitor.

Imidazole is a planar 5-membered ring and a highly polar compound. It has been used extensively as a corrosion inhibitor. Imidazole is incorporated into many important biological molecules.

(?)-Acutumine is a tetracyclic chloroalkaloid that exhibits selective cytotoxicity to cultured human T cells and memory-enhancing properties in the Wistar rat model.