Stereoselective Synthesis of 3-Hydroxyproline Benzyl Esters from <i>N</i>-Protected β-Aminoaldehydes and Benzyl Diazoacetate
作者:Steven R. Angle、Dominique S. Belanger
DOI:10.1021/jo030360f
日期:2004.6.1
benzyl esters from α-alkyl and α-alkoxy N-protected aminoaldehydes with benzyl diazoacetate is described. Aldehydes with α-alkyl substituents afforded prolines as a single diastereomer with a trans-cis relative configuration in 14−77%. An α-tert-butyldimethylsilyloxy aminoaldehyde afforded a proline as a single diastereomer with a trans-trans relative configuration in 37% yield.