1. Matveeva, E.D., Kurts, A.L., Blokhin, A.V., Sergeev, N.M., Bolkunov, I.A., Sinitsina, E.E., and Bundel’, Yu.G.,Bioorg. Khimiya, 1988, vol. 14, no. 6, pp. 839–847.
2. Bestmann, H.J., Stransky, W., and Vostrovsky, O.,Chem. Ber., 1975, vol. 109, no. 5, pp. 1694–1700.
3. Henrick, C.A.,Tetrahedron, 1977, vol. 33, no. 15, pp. 1867–1869.
4. Matveeva, E.D., Erin, A.S., and Kurts, A.L.,Zh. Org. Khim., 1997, vol. 33, no. 8, pp. 1137–1140.
5. Remizova, L.A., Kryukov, A.V., Balova, I.A., and Favorskaya, I.A.,Zh. Org. Khim., 1985, vol. 21, no. 5, pp. 1001–1004.