H. Satoh et al., SYNTHESIS OF L-ENANTIOMERS OF 4'-THIOARABINOFURANOSYL PYRIMIDINE NUCLEOSIDES, Bioorganic & medicinal chemistry letters, 8(9), 1998, pp. 989-992
L-Enantiomers of 4'-thioarabinofuranosyl pyrimidine nucleosides were s
ynthesized from D-xylose. Methyl 2,3,5-tri-O-benzyl-D-xylofuranoside 6
was converted to the corresponding xylitol 7, which was treated with
MsCl and then Na2S to give 1,4-anhydro-L-4-thioarabitol 8. As previous
ly reported, Pummerer rearrangement of 8 followed by glycosylation wit
h a silylated thymine and N4-acetylcytosine derivative and deprotectio
n gave the corresponding alpha- and beta-L-4'-thioarabinofuranosyl pyr
imidine nucleosides, (C) 1998 Elsevier Science Ltd. All rights reserve
d.