Synthesis and Anti-Tumor Activities of Ring A Derived Analogues of Oleanolic Acid
Meng Yanqiu, Xing Wen, Kuai Zhenyu, Zhang Weichen, Li Wei
Chin. J. Org. Chem. . 2017, (6): 1417 -1425 .  DOI: 10.6023/cjoc201610033