C-1' radicals in modified nucleosides have been generated by a variety of m
ethods. Synthetic methodologies based on radical cascade reactions for the
preparation of anomeric spironucleosides have been developed. Structural in
formation on C-1' radicals has been obtained and their fate in anoxic or ae
robic conditions has been studied. (C) 1999 Elsevier Science S.A. All right
s reserved.