Greco, Michael N.; Hawkins, Michael J.; Powell, Eugene T.; Almond Jr., Harold R.; Corcoran, Thomas W.; De Garavilla, Lawrence; Kauffman, Jack A.; Recacha, Rosario; Chattopadhyay, Debashish; Andrade-Gordon, Patricia; Maryanoff, Bruce E. Journal of the American Chemical Society, 2002 , vol. 124, # 15 p. 3810 - 3811