Nitrones / Cycloaddition, intramolecular / Asymmetric induction / Heteroanaloga of bicyclo[3.3.0]octanes, enantiomerically pure / Tetrahydrofuran derivatives, y-amino alcohols Enantiomerically Pure 3,?-Dioxa-2-azabicyclo[3.3.0]octanes by Intramolecular 1,3-Dipolar Cycloaddition of Nitrones Starting
Synthese homochiraler 3-Oxa-2,7-diazabicyclo[3.3.0]octane aus Aminosäuren durch intramolekulare 1,3-dipolare Cycloaddition von Nitronen
✍ Scribed by Aurich, Hans Günter ;Frenzen, Gerlinde ;Gentes, Christian
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1993
- Tongue
- English
- Weight
- 1018 KB
- Volume
- 126
- Category
- Article
- ISSN
- 0009-2940
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✦ Synopsis
octanes, homochiral / Amino acids / Nitrones / Cycloadditions, diastereoselective, intramolecular Synthesis of Homochiral 3-Oxa-2,1-diazabicyclo[3.3.0]octanes from Amino Acids by Intramolecular 1.3-Dipolar Cycloaddition of Nitrones
N-Allylamino alcohols 9 were prepared from amino acids by compounds 6. The cycloaddition proceeds diastereoselectively various methods. Swern oxidation of 9 afforded aldehydes 11. furnishing homochiral compounds 6 from homochiral starting By reaction of 11 with N-alkylhydroxylamines nitrone inter-materials. The structure of 6aA was confirmed by X-ray strucmediates 4 were formed which spontaneously underwent an tural analysis. intramolecular 1,3-dipolar cycloaddition to yield the bicyclic
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