Rational Synthesis and Preliminary Anti-cancer Activities of 18 β-Glycyrrhetinic Acid Derivatives Containing Pyridinecarboxamide
Chen Couxi, Wei Mengxue, Li Xueqiang, Li Tiancai, Zhou Xuezhang
Chin. J. Org. Chem. . 2015, (4): 835 -842 .  DOI: 10.6023/cjoc201410013