Liu, Chun-Wei; Yeh, Tze-Chiun; Chen, Chia-Hsiu; Yu, Chia-Chun; Chen, Cheng-Sheng; Hou, Duen-Ren; Guh, Jih-Hwa Tetrahedron, 2013, vol. 69, # 14 p. 2971 - 2976 doi: 10.1016/j.tet.2013.02.015