1. For example, (a) Harrison, I. T.; Lewis, B.; Nelson, P.; Rooks, W.; Roszkowski, A.; Tomolonis, A.; Fried, J. H. J. Med. Chem. 1970, 13, 203–205. (b) Crenshaw, R. R.; Luke, G. M.; Bialy, G. J. Med. Chem. 1972, 15, 1179–1180. (c) Goudie, A. C.; Gaster, L. M.; Lake, A. W.; Rose, C. J.; Freeman, P. C.; Hughes, B. O.; Miller, D. J. Med. Chem. 1978, 21, 1260–1264. (d) Jackson, W. J., Jr. Macromolecules 1983, 16, 1027–1033.
2. Kulkarni, D. G. Tetrahedron: Asymmetry 1992, 3, 163-191. (b) Zoeller, J. R.
3. Sumner, C. E., Jr. J. Org. Chem. 1990, 55, 319-324. (c) Arai, K.
4. Takakuwa, Y. Tetrahedron Lett. 1983, 24, 1531-1534.
5. (a) Sonawane, H. R.; Bellur, N. S.; Ahuja, J. R.; Kulkarni, D. G. Tetrahedron: Asymmetry 1992, 3, 163-191.