Gy. Wang et Pj. Middleton, SYNTHESIS OF 5'-C-BRANCHED THYMIDINES AND CONVERSION TO PHOSPHORAMIDITES, Nucleosides & nucleotides, 17(6), 1998, pp. 1033-1051
Thymidine was converted to its 5'-epoxy derivative, which was reacted
with nucleophiles to give 5'-C-aminomethyl-, 5'-C-bromomethyl-, 5'-C-c
yanomethyl, and 5'-C-methoxymethylthymidine derivatives with defined s
tereochemistry. 5'-C-ally-, 5'-C-hydroxymethyl-, 5'-C-hydroxypropyl-,
and 5'-C-(imidazole-4-acetamido)metbylthymidine derivatives were also
prepared. The 5'-C-branched thymidines were converted to the correspon
ding phosphoramidites.