Flavonoids from Gutierrezia repens (Asteraceae)

ALARCÓN, S. R..; ÁBALOS, M.; COLLOCA, C. B; PACCIARONI, A.; SOSA, V. E.

Asociación Química Argentina

Lugar: La Plata National University; Año: 2007 vol. 95 p. 20 - 20

p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 200%; TEXT-ALIGN: justify">Abstract 7,3?-dimethylquercetin 1, 7,3,3?-trimethylquercetin 2, 7,3,4?-trimethylquercetin 3 and quercetin 4 were isolated from aerial parts of Gutierrezia repens (Asteraceae). The structures of 1, 2 and 3 were determined mainly on the basis of 2D NMR data. Their 1H NMR spectra in CDCl3 and Me2CO-d6 are compared and discussed. The 13 C NMR spectra of these compounds are given here for the first time.