L. Denapoli et al., IMPROVED SYNTHESIS OF 2',3'-DIDEOXYCYTIDINE (D2C) AND ITS CORRELATED NUCLEOSIDE ANALOGS, Nucleosides & nucleotides, 12(9), 1993, pp. 981-992
2',3'-dideoxy- and 2',3'-dideoxy-2',3'-didehydrocytidine (d2C and d4C)
have been synthesized in good yields from 2'-deoxyuridine via dichlor
inated derivatives 7a-b. The same synthetic strategy was used in the s
ynthesis of d2C(Me) and d4C(Me) from thymidine. Following this method
the evaluable 3'-chloro-2'-deoxycytidine derivatives 9 - 12 can easily
be obtained.