1. D. T. Chu, Q. Li, C. S. Cooper, A. K. Fung, C. M. Lee, J. J. Plattner, Z. Ma, and W. Wang, Abbott Laboratories, PCT Int. Appl. WO 96,39,407 (1996);
2. Chem. Abstr., 126, 117990 (1997).
3. Chem. Abstr., 122, 105717 (1995).
4. Nitriles in heterocyclic synthesis. Part II: Synthesis and application of pyrano[3,2-h]quinoline sulphonamide derivatives