M. Endova et al., SYNTHESIS OF SOME DERIVATIVES OF ONO)ALKYLIDENE-BETA-D-THREO-PENTOFURANOSYL]THYMINE SUBSTITUTED IN THE OMEGA-POSITION OF THE ALKYLIDENE MOIETY, Collection of Czechoslovak Chemical Communications, 61, 1996, pp. 167-170
Some omega-substituted derivatives of ono)alkylidene-beta-D-threo-pent
ofuranosyl]thymine have been prepared. A key step in the synthesis is
the reaction of chlorodiethylphosphite with cyclic 3',5'-O-(1-alkoxy)a
lkylidene nucleoside orthoesters bearing a substituent in the omega-po
sition of the alkylidene moiety.