Abstract
A new flavone xyloside, 1, and two new flavan-3-ol glucosides, 3 and 4, were isolated together with three known flavones, 2, 11, and 12, five known flavans, 5-9, and a known dihydrochalcone, 10, from the stems and leaves of Juniperus communis var. depressa (Cupressaceae) collected in Oregon, U.S.A., and their structures were determined on the basis of spectral evidence. A novel flavone nucleus such as that in 1 is seldom found in nature today, and new methylcatechin glucosides 3 and 4 are also rare in nature. In addition, we investigated the inhibitory activity of individual components, i.e., 8-11, and others, that were abundantly isolated from the same plant material for the Maillard reaction.
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