STEREOSPECIFIC SYNTHESIS OF CARBOCYCLIC NUCLEOSIDES FROM 2-AZABICYCLO-HEPTAN-3-ONES VIA SODIUM BOROHYDRIDE MEDIATED CARBON-NITROGEN BOND CLEAVAGE
New synthons for carbocyclic nucleosides have been synthesized from 2-azabicyclohept-5-en-3-one readily available from cyclopentadiene, through introduction of an electron-withdrawing substituent at the 2-position followed by reduction with sodium