New acyclic purine nucleosideanalogs lacking the C(3′)C(4′) bond, have been prepared from 4-aminocyclohexene and evaluated for antiviral activity. A new synthesis of 4-aminocyclohexene from cyclohex-3-ene-1-carbonyl chloride is also reported via a Curtius reaction. None of the two compounds exhibited any antiviral activity in vitro against HSV-1, HCMV and HIV-1.