Jia, Li; Wang, Yinhu; Wang, Yanxia; Qin, Yinhui; Hu, Chaoyu; Sheng, Juzheng; Ma, Shutao Bioorganic and Medicinal Chemistry Letters, 2018, vol. 28, # 14 p. 2471 - 2476 doi: 10.1016/j.bmcl.2018.06.006