Alkaloids

Definition

Alkaloids are a class of naturally occurring organic compounds that contain at least one nitrogen atom in a heterocyclic structure and exhibit significant physiological effects on humans or animals. They are typically found in plants and are basic (alkaline) substances due to the presence of the nitrogen atom.

Related terms

Nitrogenous bases: Organic compounds that have nitrogen atoms with lone pairs making them able to accept protons, acting as bases.

Heterocyclic compounds: Organic compounds that contain a ring structure composed of at least two different elements, one of which is typically nitrogen.

Physiological effect: A change in function or behavior of a living organism caused by an external or internal stimulus, exemplified by the action of alkaloids on biological systems