Leelamine (dehydroabietylamine) is a diterpene amine that has weak affinity for the cannabinoid receptors CB<sub>1</sub> and CB<sub>2</sub>, as well as being an inhibitor of pyruvate dehydrogenase kinase. Optically active leelamine is also used as a chiral resolving agent for carboxylic acids. Leelamine has been shown to be effective against certain cancer cells, independent from its activity on CB receptors or PDK1 - it accumulates inside the acidic lysosomes leading to disruption of intracellular cholesterol transport, autophagy and endocytosis followed by cell death.