Cyclohexenyl nucleosides (Figure 1) represent well-known biomimetic agents, working as bioactive nucleoside analogues, either at monomeric and oligomeric level,1 or as substrates/templates for enzymatic replication.2 These properties are due to the capacity by the cyclohexenyl ring to act as a conformational bioisostere of natural deoxyribose. Herein, the asymmetric synthesis of 2 and ent-2 (B = Pu or Py) starting from achiral cyclohexanone is reported (Figure 2). Main attention has been devoted to the key Tsuji-Trost rearrangement step of 3 and ent-3, whose unprecedented stereoconvergent outcome has been studied by chemical methods, as well as, by spectroscopic and in silico analysis. Preliminary in vitro assays against a variety of HHV infections are also presented, revealing interesting antiviral properties, especially against TK- strains

Synthesis and Biological Evaluation of D- and L- Cyclohexenyl Nucleosides

Anna Esposito;Maria De Fenza;Giovanni Talarico;Annalisa Guaragna;Daniele D’Alonzo
2017

Abstract

Cyclohexenyl nucleosides (Figure 1) represent well-known biomimetic agents, working as bioactive nucleoside analogues, either at monomeric and oligomeric level,1 or as substrates/templates for enzymatic replication.2 These properties are due to the capacity by the cyclohexenyl ring to act as a conformational bioisostere of natural deoxyribose. Herein, the asymmetric synthesis of 2 and ent-2 (B = Pu or Py) starting from achiral cyclohexanone is reported (Figure 2). Main attention has been devoted to the key Tsuji-Trost rearrangement step of 3 and ent-3, whose unprecedented stereoconvergent outcome has been studied by chemical methods, as well as, by spectroscopic and in silico analysis. Preliminary in vitro assays against a variety of HHV infections are also presented, revealing interesting antiviral properties, especially against TK- strains
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/772343
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