1. Part II. M. Maruyama, A. Terahara, Y. Itagaki, K. Nakanishi, Tetrahedron Letters, this issue.
2. Part III. M. Maruyama, A. Terahara, Y. Nakadaira, M. C. Woods and K. Nakanishi, Tetrahedron Letters, this issue.
3. Part IV. M. Maruyama, A. Terahara, Y. Nakadaira, M. C. Woods, Y. Takagi and K. Nakanishi, Tetrahedron Letters, this issue.