Harris, Anthony R.; Nason, Deane M.; Collantes, Elizabeth M.; Xu, Wenjian; Chi, Yushi; Wang, Zhihan; Zhang, Bingzhi; Zhang, Qingjian; Gray, David L.; Davoren, Jennifer E. Tetrahedron, 2011 , vol. 67, # 47 p. 9063 - 9066