摘要:
Practical synthetic routes to beta-amino-alpha-hydroxy carboxylates (AHC) have been developed from amino acids. Reduction of beta-amino-alpha-keto esters 6 with NaBH4 was found to give anti-AHCs 7 in high de, which were efficiently converted to the corresponding syn-AHCs 8 via oxazolidine ring 10 formation. (C) 2003 Elsevier Ltd. All rights reserved.