Further hydroxyiodination of 1-acetoxycyclohex-2-enes: Preparation of tetraAcetyl conduritol D

Tetrahedron Letters

Volumn 37, Issue 36, 1996, Pages 6579-6582

  Knight, Jon ^a   Sweeney, J B ^a,b  

^a UNIVERSITY OF BRISTOL   (United Kingdom)

^b UNIVERSITY OF READING   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

CYCLOHEXENE DERIVATIVE; POLYOL; TETRAACETYLCONDURITOL D; UNCLASSIFIED DRUG;

ARTICLE; DRUG SYNTHESIS; REACTION ANALYSIS; STEREOCHEMISTRY; TECHNIQUE;

EID: 0030565594     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/0040-4039(96)01404-9     Document Type: Article

References (17)

1. 1. Hydroxyhalogenations of Acyloxycyclohex-2-enes, Part 2; for Part 1, see reference 2.
2. 2. Bange, J.; Haughan, A.F.; Sweeney, J.B.; Tetrahedron Letters, 1994, 35, 1405.
3. 3. Criegee, R.; Becher, P.; Chem. Berichte, 1957, 90, 2516.
4. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
5. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
6. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
7. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
8. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
9. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
10. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
11. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
12. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
13. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
14. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
15. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
16. 4. For recent examples of syntheses Conduritol D and its derivatives, see: Mereyala, H.B.; Gaddam, B.R.; J. Chem. Soc., Perkin Trans. 1, 1994, 2187; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Letters, 1994, 35, 3349; Carless, H.A.J.; Busia, K.; Dove, Y.; Malik, S.S.; J. Chem. Soc., Perkin Trans. 1,1993, 2505. For syntheses of other Conduritols, see: Akiyama, T.; Shima, H.; Ohnari, M.; Okazaki, T.; Ozaki, S.; Bull.Chem. Soc. Japan, 1993, 66, 3760; Kara, Y.; Balci, M.; Bourne, S.A.; Watson, W.H.; Tetrahedron Lett., 1994, 35, 3349; Secen, H.; Gultekin, S.; Sutbeyaz, Y.; Balci, M.; Synth. Comm., 1994, 24, 2103; Guo, Z.X.; Haines, A.H.; Pyke, S.M.; Pyke, S.G.; Taylor, R.J.K.; Carb. Res., 1994, 264, 147; Takano, S.; Yoshimitsu, T.; Ogasawara, K.; J. Org. Chem., 1995, 60, 1478; Yoshimitsu, T.; Ogasawara, K.; SYNLETT, 1995, 257; Mgani, Q.A.; Klunder, A.J.H.; Nkunya, M.H.H.; Zwanenburg, B.; Tetrahedron Lett., 1995, 36, 4661; Arjona, O.; Dedios, A.; Montero, C.; Plumet, J.; Tetrahedron, 1995, 51, 9191; Chiara, J.L.; Valle, N.; Tetrahedron-Asymmetry, 1995, 6, 1895; Motherwell, W.B.; Williams, A.S.; Angew. Chem., Int. Edn. Engl., 1995, 34, 2031.
17. 5. All new compounds exhibited appropriate spectroscopic and analytical data.