Aea. Hassan et al., A convenient synthesis of 2 '-deoxy-2-fluoroadenosine; a potential prodrugfor suicide gene therapy, NUCLEOS NUC, 19(3), 2000, pp. 559-565
A convenient synthesis of 2'-deoxy-2-fluoro-adenosine (1) is described. Dea
minative fluorination of 2-aminoadenosine (2) followed by silylation of the
3', 5'-hydroxyl groups gave the corresponding 2-fluoroadenosine derivative
4 in good yield. Thiocarbonylation of 4 to thiocarbonylimidazolyl derivati
ve 5a followed by treatment with an excess of tris(trimethylsilyl)silane (T
TMSS) and tert-butyl peroxide in toluene at 80 degrees C was found to affec
t an efficient deoxygenation to the corresponding 2'-deoxy derivative 6. De
silylation of 6 by Et4NF in CH3CN afforded 1 in high yield.