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A new dihydroflavone, 2( S )-isookanin-4′-methoxy-8- O - β - D -glucopyranoside ( 1 ), and a new polyacetylene glucoside, (10 S )-tridecane-2 E -ene-4,6,8-triyne-1-ol-10- O - β - D -glucopyranoside ( 2 ), along with seven known compounds ( 3–9 ), were isolated from the herb of  Bidens parviflora  Willd. The structures of all the extracted compounds were elucidated by HR-ESI-MS, 1 D and 2 D NMR spectra, as well as circular dichroism (CD).

A new dihydroflavone and a new polyacetylene glucoside from Bidens parviflora