Abstract
On the basis of chemical transformations,1H and13C NMR spectra, the structure of dauroside D isolated fromHaplophyllum dauricum has been established as 6-C-β-D-glucopyranosyl-5,7-dihydroxycoumarin. Some interesting features of the1H NMR spectra of its acetate have been reported and an assignment of the signals in its1H and13C NMR spectra has been made. Dauroside D is the first natural coumarin C-glycoside.
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