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      Overview of the taxonomy and of the major secondary metabolites and their biological activities related to human health of the Laurencia complex (Ceramiales, Rhodophyta) from Brazil

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          Abstract

          In Brazil, the Laurencia complex is represented by twenty taxa: Laurencia s.s. with twelve species, Palisada with four species (including Chondrophycus furcatus now that the proposal of its transference to Palisada is in process), and Osmundea and Yuzurua with two species each. The majority of the Brazilian species of the Laurencia complex have been phylogenetically analyzed by 54 rbcL sequences, including five other Rhodomelacean species as outgroups. The analysis showed that the Laurencia complex is monophyletic with high posterior probability value. The complex was separated into five clades, corresponding to the genera: Chondrophycus, Laurencia, Osmundea, Palisada, and Yuzurua. A bibliographical survey of the terpenoids produced by Brazilian species showed that only six species of Laurencia and five of Palisada (including C. furcatcus) have been submitted to chemical analysis with 48 terpenoids (47 sesquiterpenes and one triterpene) isolated. No diterpenes were found. Of the total, 23 sesquiterpenes belong to the bisabolane class and eighteen to the chamigrene type, whose biochemical precursor is bisabolane, two are derived from lauranes and four are triquinols. Despite the considerable number of known terpenes and their ecological and pharmacological importance, few experimental biological studies have been performed. In this review, only bioactivities related to human health were considered.

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                Author and article information

                Journal
                rbfar
                Revista Brasileira de Farmacognosia
                Rev. bras. farmacogn.
                Sociedade Brasileira de Farmacognosia (Curitiba, PR, Brazil )
                0102-695X
                1981-528X
                April 2011
                : 21
                : 2
                : 268-282
                Affiliations
                [01] orgnameInstituto de Botânica orgdiv1Núcleo de Pesquisa em Ficologia Brazil
                [02] orgnameUniversidade de São Paulo orgdiv1Departamento de Botânica Brazil
                [03] orgnameUniversidade de São Paulo orgdiv1Departamento de Botânica orgdiv2Programa de Pós-graduação Brazil
                Article
                S0102-695X2011000200012 S0102-695X(11)02100212
                197db13b-7d34-49ad-8665-635105e2d298

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 22 January 2011
                : 23 December 2010
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 97, Pages: 15
                Product

                SciELO Brazil

                Categories
                Articles

                terpenoids,taxonomy,seaweeds,Laurencia complex,biological activities,biodiversity

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