Evans, David A.; Wu, Leester D.; Wiener, John J. M.; Johnson, Jeffrey S.; Ripin, David H. B.; Tedrow, Jason S.
Journal of Organic Chemistry, 1999 , vol. 64, # 17 p. 6411 - 6417

Xie; Soleilhac; Schmidt; Peyroux; Roques; Fournie-Zaluski
Journal of Medicinal Chemistry, 1989 , vol. 32, # 7 p. 1497 - 1503