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Abstract
A new flavanone glucoside, bidenoside F, and a new chalcone glucoside, bidenoside G, along with the known compound iso-okanin 7-O-(4″,6″-diacetyl)-β-d-glucopyranoside have been isolated from the aerial parts of Bidens bipinnata L. The structures were determined on the basis of spectroscopic methods.
Acknowledgements
We thank Ms Omae for obtaining the NMR spectra and Ms Koseki for the measurement of MS spectra.