DefinitionThis section has been translated automatically.
Furanocoumarin derivatives, tricyclic ring systems in which the furan ring is linearly linked to the coumarin. The psoralens, as linear 7,6-furanocoumarins, are photosensitizing. PUVA therapy with 8-methoxypsoralen(ammoidin) is based on their photosensitizing properties (see PUVA). Psoralens occur naturally in many Rutaceae (rue plants), Apiaceae (umbellifers) and Fabaeceae (legumes).