参考文献:
Brown, Dearg S. Cumming, John G. Bethel, Paul Finlayson, Jonathan Gerhardt, Stefan Nash, Ian Pauptit, Richard A. Pike, Kurt G. Reid, Alan Snelson, Wendy Swallow, Steve Thompson, Caroline Bioorganic and Medicinal Chemistry Letters, 202 , vol. 22, # 2 p. 879 - 88