參考文獻:
Akama, Tsutomu Baker, Stephen J. Zhang, Yong-Kang Hernandez, Vincent Zhou, Huchen Sanders, Virginia Freund, Yvonne Kimura, Richard Maples, Kirk R. Plattner, Jacob J. Bioorganic and Medicinal Chemistry Letters, 2009 , vol. 19, # 8 p. 2129 - 2132