参考文献:
Chu, Guo-Hua Gu, Minghua Cassel, Joel A. Belanger, Serge Graczyk, Thomas M. DeHaven, Robert N. Conway-James, Nathalie Koblish, Michael Little, Patrick J. DeHaven-Hudkins, Diane L. Dolle, Roland E. Bioorganic and Medicinal Chemistry Letters, 007 , vol. 17, # 7 p. 1951 - 1955