Liu Yun-Ning, Su Xiao-Hui, Huo Chang-Hong, Zhang Xi-Ping, Shi Qing-Wen, Gu Yu-Cheng
Laboratory of Natural Product Chemistry, School of Pharmaceutical Sciences, Hebei Medical University, Hebei Province, P. R. China.
Chem Biodivers. 2009 Jul;6(7):963-89. doi: 10.1002/cbdv.200700433.