Chemical constituents and allelopathic and antioxidant activities of Alchorneopsis floribunda Müll. Arg. (Euphorbiaceae).
Elenilze Figueiredo Batista, Danielle Monteiro Costa, Giselle M S P Guilhon, Adolfo Henrique Muller, Lourivaldo Silva Santos, Mara Silvia Pinheiro Arruda, Alberto Cardoso Arruda, Milton Nascimento Silva, Joyce Kelly Silva, Ricardo Souza Secco, Antonio Pedro Silva Souza Filho, Bruno Apolo Figueira
Chemical investigation of extracts from the stems and leaves of Alchorneopsis floribunda Müll. Arg., collected in the Amazon region, was performed. The main isolated compounds were triterpenes (α-amyrin, β-amyrin, lupeol, betulin, betulinic acid, uvaol, erythrodiol and oleanolic acid) and phenolic acid derivatives from 4-hydroxybenzoic acid (gallic and protocatechuic acids and isocorilagin). In the germination assays, high inhibitory allelopathic effects of the extracts and isocorilagin were observed and 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity of isocorilagin was higher than those of the standards used (Trolox and butylated hydroxyanisole). This is the first chemical study of the genus Alchorneopsis (Euphorbiaceae).
