XXIII Encontro Nacional da Sociedade Portuguesa de Química, Aveiro 12 a 14 de Junho de 2013.As part of our on-going investigation on bioactive secondary metabolites, we carried out the phytochemical study of the endemic conifer Juniperus brevifolia and the macroalga Cystoseira abies-marine from Azores Islands, and also of the halophyte Salicornia ramosissima from Aveiro lagoon. This communication gives an overview on the isolation, structural characterization and bioactivity of the most interesting secondary metabolites found in these species.University of Aveiro, Portuguese Foundation for Science and Technology (FCT), European Union, QREN, FEDER and COMPETE for funding the QOPNA research unit (project PEst-C/QUI/UI0062/2011), the Portuguese NMR Network
