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
Rev. bras. farmacogn
;
21(2): 268-282, mar.-abr. 2011. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-590187
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.
Texto completo:
Disponible
Índice:
LILACS (Américas)
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
Revista:
Rev. bras. farmacogn
Asunto de la revista:
Farmacia
Año:
2011
Tipo del documento:
Artículo
/
Documento de proyecto
País de afiliación:
Brasil
Institución/País de afiliación:
Instituto de Botânica/BR
/
Universidade de São Paulo/BR
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