Diterpenes from the brown seaweed Dictyota caribaea (Dictyotaceae, Phaeophyceae): The ecological and taxonomic significance

• This first study about secondary metabolites in Dictyota caribaea provided three prenylated guaiane diterpenes.
• The crude extract and one of the minor metabolites purified showed anti-feeding activity.
• The chemotaxonomic relevance of the identified compounds within the genus Dictyota was discussed.