New polyacetylene and other compounds from Bupleurum chinense and their chemotaxonomic significance

Here, we isolated a new polyacetylene, (2Z,8E)-heptadecadiene-10-oxo-4,6-diyn-1-ol (1), an oxylipin (2), eight phenolic compounds (3–10), and 15 saponins (11–25) from the roots of Bupleurum chinense. We elucidated their structures by analysis of 1D and 2D-NMR spectroscopic data and mass spectrometry, and by comparison with those of related metabolites. This is the first report of the presence of compounds 2 and 6 in the Bupleurum spp.. Chemotaxonomic significance of these compounds is described herein. [Display omitted] •A new polyacetylene, (2Z,8E)-heptadecadiene-10-oxo-4,6-diyn-1-ol (1), an oxylipin (2), eight phenolic compounds (3–10), and 15 saponins (11–25), were isolated from the roots of Bupleurum chinense.•This is the first report of the presence of (9S,10R,11E,13S)-9,10,13- trihydroxyoctadec-11-enoic acid (2) and fraxinol (6) in the Bupleurum spp..•Chemotaxonomic significance of these compounds is described herein.