(1) One flavanone derivative, m. p. 265-266°C is obtained from the wood of Prunus serrata var. spontanea S. et Z. through the procedure of the lead-salt precipitation. (2) This product is identified with known Eriodictyol (4′, 5, 5′, 7-tetrahydroxyflavanone) from the standpoint of its physical characteriatics and chemical properties.