P. Di Felice et al., Highly stereocontrolled boron-mediated synthesis of beta-hydroxy-alpha-amino acids and dipeptides. Part 2, TETRAHEDR-A, 10(24), 1999, pp. 4709-4714
The chiral synthons 1(a-d) were submitted to boron-mediated asymmetric alde
r condensation with acetaldehyde and benzaldehyde providing, in high diaste
reomeric excess (>95%), R,R-configured aldols 2(a-f) which are useful inter
mediates to enantiomerically pure beta-hydroxy-alpha-amino acids. (C) 2000
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