Chemical constituents from Orobanche cernua Loefling

Abstract Phytochemical study of Orobanche cernua Loefling afforded 17 compounds, including eleven phenylpropanoid glycosides ( 1 – 11 ), two flavonoids ( 12 , 13 ), one lignan ( 14 ), and three phenolic acids ( 15 – 17 ) were isolated from the fresh whole plant of O. cernua . Their structures were identified by spectroscopic analyses and by comparison of their spectral data with those reported in the literature. This is the first report of isolation of compounds ( 6 , 8 , 9 , 11 , 14 – 16 ) from O. cernua and compounds ( 14 , 15 ) from the family Orobanchaceae, respectively. Compound 14 was obtained from natural source for the first time, the chemotaxonomic significance of these compounds was summarized.