Ihara, Masataka; Tanaka, Yuko; Takahashi, Nobuyuki; Tokunaga, Yuji; Fukumoto, Keiichiro
Journal of the Chemical Society - Perkin Transactions 1, 1997 , # 20 p. 3043 - 3052

E. R. Squibb and Sons, Inc.
Patent: US4524212 A1, 1985 ;
US 4524212 A

Keck, Gary E.; Giles, Robert L.; Cee, Victor J.; Wager, Carrie A.; Yu, Tao; Kraft, Matthew B.
Journal of Organic Chemistry, 2008 , vol. 73, # 24 p. 9675 - 9691