The Marchantiophyta (liverworts) produce a number of terpenoids, aromatic compounds and acetogenins, several of which show interesting biological properties, such as antimicrobial, antifungal, allergenic contact dermatitis, insecticide, insect antifeedant, cytotoxic, piscicidal, muscle relaxing, plant growth regulatory, anti-HIV and DNA polymerase β inhibitory, anti-obesity and neurotrophic activities. The isolation and chemical structures of the active compounds are discussed.
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