A new biflavonoid from Daphniphyllum angustifolium Hutch

An investigation of the flavonoids in Daphniphyllum angustifolium Hutch. resulted in the identification of a new biflavonoid, 5,7,4′-trihydroxyflavan (2α→O→7, 4α→8) kaempferol (1), together with five known flavonoids. Their structures were determined by spectroscopic method.

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