G. Rassu et al., GENERAL-APPROACH TO HYDROXYLATED ALPHA-AMINO-ACIDS EXPLOITING UTOXYCARBONYL)-2-(TERT-BUTYLDIMETHYLSILOXY)PYRROLE, Journal of the Chemical Society. Perkin transactions. I, (17), 1994, pp. 2431-2437
Racemic beta-hydroxy-alpha-amino acids 7a, 7b and 10 of either three o
r erythro configuration have been efficiently synthesized from simple
aldehydes, utilizing tert-butoxycarbonyl)-2-(tert-butyl-dimethylsiloxy
) pyrrole (TBDMSOP) as a glycine-anion equivalent. Similar methodology
, employing readily available aldehydo sugar precursors, has been succ
essfully applied to syntheses of enantiomerically pure polyhydroxylate
d alpha-amino acids 14a-14f possessing diverse constitution and chiral
ity.