Jl. Zhou et Pb. Shevlin, A CONVENIENT SYNTHESIS OF RACEMIC 2'-DEOXY CARBOCYCLIC THYMIDINES LACKING THE 5'-METHYLENE GROUP, Tetrahedron letters, 39(46), 1998, pp. 8373-8376
A convenient synthesis of racemic 2'-deoxy carbocyclic thymidines lack
ing the 5'-methylene group is reported. Thus, appropriately protected
nucleic acid bases are coupled to 3-cyclopentenol, 1, via the Mitsunob
u reaction. Epoxidation of the protected thymine substituted cyclopent
ene gives the corresponding syn and anti-epoxides in a 4:1 ratio. Ring
opening of the syn-epoxide by a variety of nucleophiles leads to the
racemic 2'-deoxy carbocyclic thymidines lacking the 5'-methylene group
. (C) 1998 Elsevier Science Ltd. All rights reserved.