Justus Liebigs Annalen der Chemie, , vol. 144, p. 182

ELI LILLY AND COMPANY
Patent: EP655439 A2, 1995 ;

Journal of Medicinal Chemistry, , vol. 40, # 18 p. 2843 - 2857

Tetrahedron Letters, , vol. 26, # 1 p. 115 - 118

Organic and Biomolecular Chemistry, , vol. 1, # 13 p. 2326 - 2335

Cahn
Journal of the Chemical Society, 1933 , p. 1400,1403

Choi-Sledeski, Yong Mi; McGarry, Daniel G.; Green, Daniel M.; Mason, Helen J.; Becker, Michael R.; Davis, Roderick S.; Ewing, William R.; Dankulich, William P.; Manetta, Vincent E.; Morris, Robert L.; Spada, Alfred P.; Cheney, Daniel L.; Brown, Karen D.; Colussi, Dennis J.; Valeria, Chu; Heran, Christopher L.; Morgan, Suzanne R.; Bentley, Ross G.; Leadley, Robert J.; Maignan, Sebastien; Guilloteau, Jean-Pierre; Dunwiddie, Christopher T.; Pauls, Henry W.
Journal of Medicinal Chemistry, 1999 , vol. 42, # 18 p. 3572 - 3587

MITSUBISHI TANABE PHARMA CORPORATION
Patent: US2012/196824 A1, 2012 ;

Gabriel; Thieme
Chemische Berichte, 1919 , vol. 52, p. 1083

ORION CORPORATION
Patent: WO2005/794 A1, 2005 ;
Location in patent: Page 34 ;
WO 2005/000794 A1