Secondary Metabolites from Chilean Baccharis species

Abstract

Baccharis linearis Ruiz et Pav, Baccharis rbomboidalis Remy, and Baccharis solieri Remy (Compositae). The ethanolic extracts afforded a novel chromene 1 along with seventeen known compounds (Table 1).Chromenes are of common occurrence in the Compositae (1), and the methyl ester of compound 1 was recently reported from a Wemeria species (2). In addition to chromene 1, oleanolic acid, stigmasterol, ß-amyrin, and friedelinol were also present in varying amounts in the three Baccharis species (Table 1). EXPERIMENTAL Plant materials.-The plants were collected at the base of the mountains near Santiago, Chile, in October 1984. Voucher specimens are kept at the

Kinetics of lipid oxidation in the presence of cinnamic acid derivatives

“…The spectral characteristics (MS, UV, 1 H-and 13 C-NMR) were identical with published data, for DMCB as published by Labbe et al [31] and for DCEPB as published by Boudourova-Krasteva et al [26].…”

“…49 mg of pure A III were isolated (50%), spectral data (UV, IR, 1 H-and 13 C-NMR) were identical with those published by Labbe et al [31].…”

Características físico-químicas e atividade antimicrobiana de extratos de própolis da Paraíba, Brasil

“…Visto que no Brasil a colheita de própolis pode se dar durante todo o ano, não são raras as possíveis variações sazonais em sua composição e atividade, considerando-se a região e o local de colheita onde a própolis foi produzida (LABBE et al, 1986;SFORCIN et al, 1998).…”

Evaluation of anti-inflammatory activity of derivatives from aerial parts ofBaccharis uncinella

“…Phytochemically, it is reported that Baccharis spp. are composed basically by diterpenoids, triterpenoids, flavonoids, and chromenes (Bohlmann et al, 1979;Labbe et al, 1986;Zdero et al, 1988;Jarvis et al, 1991;Verdi et al, 2005) biological activity. Based on a systematic study aiming the characterization of bioactive compounds from Brazilian flora (Grecco et al, 2010;Lago et al, 2010), the present work was undertaken to determine the activities of CH 2 Cl 2 and EtOAc partition phases as well as their purified derivatives obtained from EtOH extract of aerial parts from Baccharis uncinella DC against inflammation induced by the proinflammatory phospholipase A2 (PLA2) and by carrageenan.…”