Asymmetric synthesis of all isomers of alfa-methyl-beta-phenylserine
- Avenoza, A. 1
- Cativiela, C. 2
- Corzana, F. 1
- Peregrina, J.M. 1
- Zurbano, M.M. 1
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1
Universidad de La Rioja
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2
Instituto de Nanociencia y Materiales de Aragón
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ISSN: 0957-4166
Año de publicación: 2000
Volumen: 11
Número: 10
Páginas: 2195-2204
Tipo: Artículo
beta Ver similares en nube de resultadosOtras publicaciones en: Tetrahedron: Asymmetry
Resumen
This report describes the synthesis of enantiomerically pure (2R,3R)-, (2R,3S)-, (2S,3S)- and (2S,3R)-2-amino-3-hydroxy-2-methyl-3-phenylpropanoic acids, four quaternary α-amino acids, using a stereodivergent synthetic route and starting from (S)- and (R)-N-Boc-N,O-isopropylidene-α-methylserinals. The key step involves the asymmetric Grignard additions to the above chiral aldehydes, in which high levels of asymmetric induction are observed. Copyright (C) 2000 Elsevier Science Ltd.