Abbenhuis; Boersma; Van Koten
Journal of Organic Chemistry, 1998 , vol. 63, # 13 p. 4282 - 4290

Mishani, Eyal; Dence, Carmen S.; McCarthy, Timothy J.; Welch, Michael J.
Tetrahedron Letters, 1996 , vol. 37, # 3 p. 319 - 322

Romanelli; Manetti; Scapecchi; Borea; Dei; Bartolini; Ghelardini; Gualtieri; Guandalini; Varani
Journal of Medicinal Chemistry, 2001 , vol. 44, # 23 p. 3946 - 3955