Resumo

ALARCON, S. R et al. Phytochemistry and phytotoxic activity of lagascea mollis (asteraceae). J. Argent. Chem. Soc. [online]. 2007, vol.95, n.1-2, pp.25-31. ISSN 1852-1428.

In the course of a phytochemical study of L. mollis Cav. the previously reported compounds patuletin-7-O-glucoside 1, 12-hydroxy-13-en-xanthorrhizol 2, 11-en-13-hydroxy-xanthorrhizol 3, xanthorrhizol 4, 12,13-epoxy-xanthorrhizol 5, and 1-α-angeloyloxycarotol 6, were isolated. The EtOH extract of the aerial parts showed selective phytotoxic effects on S.halepense.  Compounds 2 and 3 exhibited potent herbicidal activity on S. halepense. Additionally, at all assayed doses, compound 2 affected drastically the root growth.

Palavras-chave : Lagascea mollis; Asteraceae; Sesquiterpenes; Flavonoids; Phytotoxicity.