6CLASSEN-HOUBEN D, SCHUSTER D, DA CUNHA T, et al. Selective inhibition of llBeta-hydroxysteroid dehydro- genase 1 by 18alpha-glycyrrhetinic acid but not 18beta-glycyrrhetinic acid[J]. J Steroid Biochem Mol Biol, 2009, 113 (3 - 5) :248- 252.
7LIN J C,CHEMG J M, HUNG M S,et al. Inhibitory effects of some derivatives of glycyrrhizic acid against Epstein-Barr virus infection: structure-activity relationships[J]. Antiviral Res, 2008,79 (1) : 6 - 11.
8REN Weichao, LU Yang,JING Jing, et al. Determination of glycyrrhizin in dog plasma by liquid chromatography-mass spectrometry and its application in pharmacokinetic studies[J]. Eur J Mass Spectrom, 2010,16:673 -678.
9ZOU Qiaogen,WEl Ping , LI J ing,et al. Simultaneous determination of 18a- and 1813-glycyrrhetic acid in human plasma by LC-ESI-MS and its application to pharmacokinetics[-J]. Biomedical Chromatography, 2009,23 ( 1 ) : 54 - 62.
10SABBIONI C, MANDRIOLI R, FERRANTI A, et al. Separation and analysis of glycyrrhizin, 18beta-glyeyrrhetic acid and 18alpha- glycyrrhetic acid in liquorice roots by means of capillary zone electrophoresis[J]. J Chromatogr A, 2005, 1081(1): 65-71.