A new chromone glycoside from Dryopteris fragrans (II) / 中草药

ABSTRACT

Objective: To study the chemical constituents from the whole plants of Dryopteris fragrans. Methods: The chemical constituents were isolated by various column chromatographic methods. The structures of the compounds were elucidated on the basis of physiochemical properties and spectral analyses. Results: Three compounds named 2-isopropyl-5, 7-dihydroxy-1'-O-β-D-glucopyranosyl chromone (1), (6R, 9R)-3-oxo-α-ionol-9-O-β-D-glucopyranoside (2), and taxicatin (3) were isolated and identified. Conclusion: Compound 1 is a new compound named frachromone B, compounds 2 and 3 are reported for the first time from family Dryopteridaceae.