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 / Esposito, Anna; DE FENZA, Maria; Andrei, Graciela; Snoeck, Robert; Talarico, Giovanni; Guaragna, Annalisa; D’Alonzo, Daniele. - (2017). (Intervento presentato al convegno XVIIth Symposium on Chemistry of Nucleic Acid Components tenutosi a Cesky Krumlov, Repubblica Ceca nel 4-9 giugno 2017).
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- strainsI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
