Phenolic compounds from Glycyrrhiza uralensis (Chinese liquorice)

Glycyrrhiza uralensis has been used in Chinese traditional system of medicine for many ailments. Over 20 phenolic compounds such as flavonoids, isoflavonoids, flavanoids, isoflavanoids, and coumarins conjugated with prenyl unit(s) were isolated from the methanol extract of G. uralensis and characterized by means of NMR and mass spectroscopic techniques. Herein, isolation and structure determination of purified compounds are described.