1. Yakovleva, M.P., Khasanova, E.F., Talipov, R.F., and Ishmuratov, G.Yu., Vestn. Bashk. Unst., 2009, vol. 14, p. 1072.
2. Mori, K. Tetrahedron, 1989, vol. 45, p. 3233.
3. Ishmuratov, G.Yu., Kharisov, R.Ya., Odinokov, V.N., and Tolstikov, G.A. Usp. Khim., 1994, vol. 63, p. 580.
4. Mori, K. and Kuwahara, S., Tetrahedron, 1982, vol. 38, p. 521.
5. Kharisov, R.Ya., Botsman, O.V., Gazetdinov, R.R., Ishmuratov, G.Yu., and Tolstikov, G.A. Russ. Chem. Bull., 2001, vol. 50, p. 1117.