Objective: To study the chemical constituents of Dryopteris fragrans.
Methods: Two new compounds were isolated and purified from this plant by column chromatography and their structures were elucidated through spectroscopic analysis.
Results: Two new compounds were identified as trans-S-trans-p-hydroxy cinamic acid-9-beta-D-xylpyranosyl (1 --> 2) -beta-D-glucopyranosyl ester, methyl-2-eth-yl-6-((3, 4, 5-trihydroxy-6-(hydroxymethyl) tetrahydro-2H-pyran-2-yl) oxy) benzoate.
Conclusion: Compounds 1 and 2 are new and named fragranoside J and fragranoside K.
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