Benzophenanthridines are a class of chemical compounds that have a characteristic three-ring structure, consisting of two benzene rings fused to a phenanthrene ring. This structural core is found in several naturally occurring and synthetic compounds with various biological activities. Some benzophenanthridine alkaloids, such as sanguinarine and chelerythrine, have been studied for their antimicrobial, anti-inflammatory, and anticancer properties. However, it is essential to note that these compounds can also exhibit toxicity at higher concentrations, making their therapeutic use challenging.

Benzophenanthridines are a class of chemical compounds that have a characteristic tricyclic structure consisting of two benzene rings fused to a phenanthrene ring. This structural core is also known as a benzo[c]phenanthrene. Benzophenanthridine alkaloids are a subgroup of natural products that contain this core structure and are found in various plants, including members of the poppy family (Papaveraceae). Some benzophenanthridine alkaloids have shown potential medicinal properties, such as antimicrobial, anti-inflammatory, and anticancer activities. Examples of benzophenanthridine alkaloids include sanguinarine, chelerythrine, and berberine.