| Autor: |
Grandel, Roland, Kazmaier, Uli |
| Zdroj: |
Tetrahedron Letters; January 1997, Vol. 38 Issue: 46 p8009-8012, 4p |
| Abstrakt: |
Aldol reactions of chelated amino acid ester enolates with chiral aldehydes gives rise to polyhydroxylated amino acids in a highly stereoselective fashion. These oxygenated amino acids can be converted into polyhydroxylated pipecolinic acids and azasugars by cyclization using the Mitsunobu reaction. A interesting epimerization was observed during the cyclization. © 1997 Elsevier Science Ltd. |
| Databáze: |
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