Secondary Metabolites from Plants and Marine Organisms as Selective Anti-Cyanobacterial Agents

摘要

Extracts of more than one thousand species of plants and marine organisms were evaluated for selective algicidal activity against the musty-odor cyanobacterium (blue-green alga) Oscillatoria perornata. Bioassay-guided fractionation yielded anti-cyanobacterial compounds from the tropical marine brown alga Dictyota dichotoma. The structures of the active metabolites were confirmed spectroscopically to be two bicyclic diterpenes 10-acetoxy-18-hydroxy-2,7-dolabelladiene and dictyol B acetate.