Journal of Medicinal Chemistry, , vol. 50, # 17 p. 4147 - 4161

US4292431 A1, ;

Journal of the Chemical Society, , p. 4225,4227

Neurogen Corporation, Corporation of the State of Delaware
Patent: US2003/18025 A1, 2003 ;
US 20030018025 A1

Warner-Lambert Company
Patent: US4521416 A1, 1985 ;

Sivek, Roman; Pytela, Oldrich; Bures, Filip
Journal of Heterocyclic Chemistry, 2008 , vol. 45, # 6 p. 1621 - 1627

Sircar; Bobowski; Bristol; Weishaar; Evans
Journal of Medicinal Chemistry, 1986 , vol. 29, # 2 p. 261 - 267

Sircar; Bobowski; Bristol; Weishaar; Evans
Journal of Medicinal Chemistry, 1986 , vol. 29, # 2 p. 261 - 267

Widler, Leo; Jaeggi, Knut A.; Glatt, Markus; Mueller, Klaus; Bachmann, Rolf; Bisping, Michael; Born, Anne-Ruth; Cortesi, Reto; Guiglia, Gabriela; Jeker, Heidi; Klein, Remy; Ramseier, Ueli; Schmid, Johann; Schreiber, Gerard; Seltenmeyer, Yves; Green, Jonathan R.
Journal of Medicinal Chemistry, 2002 , vol. 45, # 17 p. 3721 - 3738