参考文献:
Skinner, Philip J. Cherrier, Martin C. Webb, Peter J. Sage, Carleton R. Dang, Huong T. Pride, Cameron C. Chen, Ruoping Tamura, Susan Y. Richman, Jeremy G. Connolly, Daniel T. Semple, Graeme Bioorganic and Medicinal Chemistry Letters, 007 , vol. 7, # 3 p. 669 - 66