Synthesis, Spectral Characterization, and In Vitro Cellular Activities of Metapristone, a Potential Cancer Metastatic Chemopreventive Agent Derived from Mifepristone (RU486) - Jichuang Wang; Jianzhong Chen; Liyuan Wan; Jingwei Shao; Yusheng Lu; Yewei Zhu; Minrui Ou; Suhong Yu; Haijun Chen; Lee Jia (The AAPS Journal, 2014)