Bayer Aktiengesellschaft
Patent: US4496736 A1, 1985 ;

NOVARTIS AG
Patent: WO2008/122615 A1, 2008 ;
Location in patent: Page/Page column 50 ;
WO 2008/122615 A1

Kalkhambkar, Rajesh G.; Waters, Sarah N.; Laali, Kenneth K.
Tetrahedron Letters, 2011 , vol. 52, # 8 p. 867 - 871

Sumitomo Pharmaceuticals Company, Limited
Patent: US6384033 B1, 2002 ;

Meredith, Erik L.; Ardayfio, Ophelia; Beattie, Kimberly; Dobler, Markus R.; Enyedy, Istvan; Gaul, Christoph; Hosagrahara, Vinayak; Jewell, Charles; Koch, Keith; Lee, Wendy; Lehmann, HansJoerg; Mckinsey, Timothy A.; Miranda, Karl; Pagratis, Nikos; Pancost, Margaret; Patnaik, Anup; Phan, Dillon; Plato, Craig; Qian, Ming; Rajaraman, Vasumathy; Rao, Chang; Rozhitskaya, Olga; Ruppen, Thomas; Shi, Jie; Siska, Sarah J.; Springer, Clayton; Van Eis, Maurice; Vega, Richard B.; Von Matt, Anette; Yang, Lihua; Yoon, Taeyoung; Zhang, Ji-Hu; Zhu, Na; Monovich, Lauren G.
Journal of Medicinal Chemistry, 2010 , vol. 53, # 15 p. 5400 - 5421

Bonnet, Veronique; Mongin, Florence; Trecourt, Francois; Queguiner, Guy
Journal of the Chemical Society, Perkin Transactions 1, 2000 , # 24 p. 4245 - 4249