Sulfoxide-metal exchange for the synthesis of the 2'-tributylstannyl derivative of 2',3'-didehydro-2',3'-dideoxyuridine (d4u): a general entry to 2'-carbon-substituted analogues of d4U

Nucleosides Nucleotides Nucleic Acids. 2002 Apr-May;21(4-5):275-86. doi: 10.1081/NCN-120006826.

Abstract

Methods are described for the synthesis of the 2'-tributylstannyl derivative of 2',3'-didehydro-2',3'-dideoxyuridine (d4U). Two approaches were investigated: radical-mediated desulfonylative stannylation of the 2'-benzenesulfonyl derivative of d4U and sulfoxide-metal exchange reaction of the 2'-benzenesulfinyl derivative. The latter approach was found to give the desired 2'-stannyl derivative in good yield. It was also shown that manipulations of the stannyl group allowed the introduction of a variety of carbon-substituents to the 2'-position by applying the Stille reaction. The whole reaction sequence has opened up a highly general entry to 2'-carbon-substituted analogues of d4U.

MeSH terms

  • Anti-HIV Agents / chemical synthesis*
  • Dideoxynucleosides / chemical synthesis*
  • Metals / chemistry
  • Models, Chemical
  • Pyrimidine Nucleosides / chemical synthesis*
  • Stereoisomerism
  • Sulfoxides / chemistry
  • Uridine / chemical synthesis*

Substances

  • Anti-HIV Agents
  • Dideoxynucleosides
  • Metals
  • Pyrimidine Nucleosides
  • Sulfoxides
  • 2',3'-didehydro-2',3'-dideoxyuridine
  • Uridine