Nicolaou; Li, Yiwei; Uesaka, Noriaki; Koftis, Theocharis V.; Vyskocil, Stepan; Ling, Taotao; Govindasamy, Mugesh; Qian, Wenyuan; Bernal, Federico; Chen, David Y.-K. Angewandte Chemie - International Edition, 2003, vol. 42, # 31 p. 3643 - 3648 doi: 10.1002/anie.200351825