Robaa, Dina; Enzensperger, Christoph; El Din Abul Azm, Shams; El Khawass, El Sayeda; El Sayed, Ola; Lehmann, Jochen
Journal of Medicinal Chemistry, 2010 , vol. 53, # 6 p. 2646 - 2650

Beck, James P.; Pechulis, Anthony D.; Harms, Arthur E.
Patent: US2002/91134 A1, 2002 ;
US 20020091134 A1

Hoffmann-La Roche Inc.
Patent: US6331640 B1, 2001 ;

Humber,L.G. et al.
Journal of Medicinal Chemistry, 1974 , vol. 17, p. 1140 - 1145