S. Ishigami et al., REACTIVITY OF CARBOCYCLIC 4-MEMBERED RADICALS FOR THE PREPARATION OF CARBOCYCLIC ANALOGS OF OXETANOCINS, Journal of the Chemical Society. Perkin transactions. I, (17), 1994, pp. 2407-2412
New carbocyclic four-membered C-nucleosides have been synthesized from
the corresponding carboxylic acids and heteroaromatic compounds by th
e use of the Barton radical reaction. These carbocyclic nucleosides ar
e analogues of oxetanosyl and cyclobutyl N-nucleosides which exhibit p
otent antiviral activities. The present synthetic routes provide a met
hod for the preparation of cyclobutyl C-nucleosides.