Chemical Studies on the Oriental Plant Drugs. XXXVI. Structure of Licoricone, a New Isoflavone from Licorice Root

Abstract

A new isoflavone, licoricone, C₂₂H₂₂O₆, mp 250-251°, was isolated from the root of Glycyrrhiza uralensis FISCH, et DC. The chemical structure of licoricone was studied spectroscopically to lead a partial formula (VII). Finally an X-ray crystallographic analysis of its monobromoacetate (VIII) was undertaken to formulate licoricone as I.