ChemInform Abstract: Synthesis and Antiviral Activity of Cyclopropyl-Spirocarbocyclic Adenosine, (4R,5S,6R,7R)-4-(6-Amino-9H-purin-9-yl)-7-(hydroxymethyl)spiro [2.4]heptane-5,6-diol Against Hepatitis C Virus

Synthesis of 2'-deoxy-2'-fluoro-2'-C-methyl spiro cyclopentyl carbocyclic uridine analog as potential inhibitors of HCV NS5B polymerase

Synthesis of 1-((4 R,5S,6R,7R)-5,6-dihydroxy-7-(hydroxymethyl)spiro[2.4]heptan-4-yl)pyrimidine-2,4(1H,3H)-dione (12) and its phosphoramidate prodrug 18 is reported. The synthesis of the targeted compound 12 was initiated from triol 1. By the introduction of a substituent methylene group at 6-position of 4, followed by Simmons-Smith cyclopropanation and amination, key intermediate 10 was synthesized. The intermediate amine 10 was utilized to synthesize the nucleoside 12. Furthermore, the nucleoside 12 was derivatized to 2'-α-hydroxy-2'-β-methyl (23) and 2'-α-fluoro-2'-β-methyl (27) analogs. All synthesized derivatives of spiro-cyclopropyl carbocyclic uridine analogs 12, 18, 23 and 27 were evaluated for anti-HCV activity, but none of the compounds, reported in this article show any anti-HCV activity.