5'-O-(4,4'-dimethoxytrityl)-2-N-(N-cyclohexyl-N-methylcarbamoyl)deoxyguanosine

3',5'-O-bis(tert-butyldimethylsilyl)-2-N-[N-(trans-4-hydroxycyclohexyl)-N-methylcarbamoyl]deoxyguanosine

1-cyclohexyl-3-(9-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-6-oxo-6,9-dihydro-1H-purin-2-yl)urea

5'-O-(4,4'-dimethoxytrityl)-2-N-cyclohexylcarbamoyldeoxyguanosine

3',5'-O-bis(tert-butyldimethylsilyl)-2-N-carbamoyldeoxyguanosine