Abstract

DAVILA, Marcelo; STERNER, Olov  and  HINOJOSA, Nelson. Rev. Bol. Quim [online]. 2013, vol.30, n.2, pp.137-141. ISSN 0250-5460.

ABSTRACT Six flavonoids were obtained in a phytochemical investigation of the aerial parts of Baccharis polycephala. The structures of the natural products were established by NMR, ATR-IR spectroscopy and high resolution mass spectroscopy as 5,7,4'-trihydroxyflavanone (1), 5,7-dihydroxy-4'-methoxyflavanone (2), 5-hydroxy-4',7-dimethoxyflavanone (3), 5,7,4'-trihydroxyflavonol (4), 5,7-dihydroxy-4'-methoxyflavonol (5) and 5,7-dihydroxy-4'-methoxyflavone (6). The presence of the isolated compounds in Baccharis polycephala is reported for the first time

Keywords : Flavonoid, Baccharispolycephala Weddell; 5,7,4'-trihydroxyflavanone; 5,7-dihydroxy; 4'-methoxyflavanone; 5-hydroxy-4'; 7-dimethoxyflavanone; 5,7,4'-trihydroxyflavonol; 5-7-dihydroxy; 4'-methoxyflavonol; 5,7-dihydroxy; 4 '-methoxyflavone.

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