From the roots of Glycyrrhiza uralensis, two new pterocarpenes, glycyrrhizol A (1) and glycyrrhizol B (2), along with four known isoflavonoids, 5-O-methylglycryol (3), isoglycyrol (4), 6,8-diisoprenyl-5,7,4'-trihydroxyisoflavone (5), and gancaonin G (6), were isolated using a bioassay-guided