References

1. G. Heterocycles v.21 Shih, D. H.;Baker, F.;Cama, L.;Christensen, B.
2. Journal of Synthetic Organic Chemistry v.47 Ito, Y.;Terashima, S.
3. J. Am. Chem. Soc. v.114 Yamamoto, Y.;Asao, N.
4. Chem. Pharm. Bull. v.40 Honda, T.;Ishizone, H.
5. Tetrahedron Letter Uyeo, S.;Itani, H.
6. Synlett Braner, H.;Neumann, W.
7. Tetrahedron Letter Yamagisawa, H.;Ando, A.
8. J. Am. Chem. Soc. v.107 Hanessian, S.;Bedeschi, A.
9. Synlett Braner, H.;Neumann, W.
10. Tetrahedron Letter Uijttewaal, H. P.;Joukers, F. L.;Van der Gen, A.
11. J. Org. Chem. v.52 Fuentes, L. M.;Shinkai, I.