Title:Recent Advances in the Synthesis of 5′-deoxynucleoside Phosphonate
Analogs
Volume: 29
Issue: 22
Author(s): Guang Huan Shen and Joon Hee Hong*
Affiliation:
- College of Pharmacy, Chosun
University, Kwangju 501-759, Republic of Korea
Keywords:
5′-Deoxynucleoside phosphonates, antiviral agents, enzyme inhibitors, bioisostere, nucleoside, nucleoside- mimicking analogs.
Abstract: The present review focuses on the synthesis of cyclic 5′-deoxynucleoside
phosphonate analogs. The formation of various phosphonate alkyl moieties is accomplished
through (i) Wittig (or HWE) type condensation to the nucleoside aldehyde moiety;
(ii) nucleophilic displacement reaction using phosphonate anion or Lewis acid; (iii)
Arbuzov reaction; (iv) olefin cross-metathesis between vinyl phosphonates and vinylated
nucleosides; and (v) radical reaction and Pd catalyzed alkyne. For the coupling of nucleobases
with cyclic moieties, the Mitsunobu reaction and Sonogashira-type cross-coupling
are usually applied. For the coupling of furanose moieties with nucleobases, Vorbrüggentype
condensation is generally applied. Addition reactions mediated by selenium ions are
mainly applied for the coupling of carbocyclic moieties. Their biological activity results
have been summarized.