Journal of the Brazilian Chemical Society
versão impressa ISSN 0103-5053
RADKE, Vanessa S. C. de O. et al. Abietane diterpenes from Sagittaria montevidensis ssp montevidensis Charm. & Schltdl. J. Braz. Chem. Soc. [online]. 2007, vol.18, n.2, pp. 444-447. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532007000200031.
Two new abietane-type diterpenes, 3b-hydroxy-9a, 13a-epidioxyabiet-8(14)-ene (1) and 3-oxo-9a,13a-epidioxyabiet-8(14)-ene (2), were isolated from the methanolic crude extract of the petioles of Sagittaria montevidensis ssp montevidensis (Alismataceae). The structures of 1 and 2 were determined on the basis of spectrometric analyses including HREIMS, IR as well as 1H and 13C 1 and 2D NMR.
Palavras-chave : Sagittaria montevidensis; Alismataceae; diterpenes; endoperoxide abietane.