Abstract:
The synthesis and identification of the four 3,4-di-O-benzyl-2,5-anhydro-aldehydo pentose
derivatives with D-xilo, D-lyxo, D-ribo and D-arabino configuration are described. A correlation between the NMR spectra
and the cis and trans disposition of the carbonyl group (C-1) and the benzyl group attached to
C-3 is established.