Abstract:A new compound (1) and eleven known compounds were isolated from the polaric fractions of Dendranthema morifolium (Ramat.) Tzvel. By means of chemical and spectral analyses, compound 1 was established as n-pentyl-β-D-fruetofuranoside. Two known compounds n-butyl and ethyl eaffeate were strong antagonists of 5-]ipoxygenase.