Savage, Scott; Babu, Srinivasan; Zak, Mark; Mao, Zhongping; Cao, Jianhua; Ge, Yonghui; Ma, Dongxu; Jiang, Guoqiang Synlett, 2013 , vol. 24, # 8 art. no. ST-2013-R0106-L, p. 987 - 990