References

[1] See for example: (a) Fleet, G.W.J. Top. Med. Chem. 1988, 65, 149. (b) Legler, G. Adv. Carbohydr. Chem. Biochem., 1990, 48, 319. (c) Winchester, B.; Fleet, G.W.J. Glycobiol., 1992, 2, 199.

[2] Casiraghi, G.; Zanardi, F.; Rassu, G.; Spanu, P. Chem. Rev. 1995, 95, 1677 and references cited therein.

[3] (a) Spanu, P.; Rassu, G.; Ulgheri, F.; Zanardi, F.; Battistini, L.; Casiraghi, G. Tetrahedron, 1996, 52, 4829. (b) Poli, G.; Ciofi, F.; Maccagni, E.; Sardone, N. Tetrahedron Lett., 1995, 36, 8669

[4] Dondoni, A.; Junquera, F.; Merchan, F.; Merino, P.; Tejero, T. Synthesis, 1994, 1450.

[5] Merchan, F.; Merino, P.; Tejero, T. Tetrahedron Lett., 1995, 36, 6949.

[6] Dondoni, A.; Franco, S.; Junquera, F.; Merchan, F.; Merino, P.; Tejero, T.; Bertolasi, V. Chem. Eur. J., 1995, 1, 505.

[7] Merino, P.; Anoro, S.; Castillo, E.; Merchan, F.; Tejero, T. Tetrahedron: Asymmetry, 1996, 7, in press.

[8] Dondoni, A.; Franco, S.; Junquera, F.; Merchan, F.; Merino, P.; Tejero, T. Synth. Commun., 1994, 24, 2537

[9] Merchan, F.; Merino, P.; Tejero, T. THEOCHEM (submitted). Click here to see the model or for launching the file model.pdb

[10] As indicated in the text the reaction became quantitative in 1 h. However, it is important to point out that when much longer times were used (ca. 5-10%) overhydrogenated product was obtained.

[11] Data for 6: oil, ¹H NMR (CDCl₃) d 1.30 (s, 3H), 1.35 (s, 3H), 3.44 (dd, 1H, J 3.4, 8.4), 3.51 (ddd, 1H, J 1.6, 5.7, 7.4 ), 3.92 (dd, 1H, J 6.6, 8.4), 4.09 (ddd, 1H, J 3.4, 5.7, 6.6), 4.75 (s, 2H), 5.48 (dd, 1H, J 6.6, 7.4), 6.20 (dd, 1H, J 1.6, 6.6), 7.29-7.41 (m, 5H).