N-Isobutyryl-3'-O,5'-O-[oxybis(diisopropylsilanediyl)]guanosine

3',5'-O-(1,1,3,3-Tetraisopropyl-1,3-disiloxanediyl)uridine

3,5-O-(1,1,3,3-Tetraisopropyl-1,3-disiloxanediyl)adenosine

3',5'-O-(1,1,3,3-Tetraisopropyl-1,3-disiloxanediyl)guanosine

N4-Benzoyl-3',5'-O-(1,1,3,3-tetraisopropyl-1,3-disiloxanediyl)cytidine

3',5'-O-[1,1,3,3-Tetrakis(1-methylethyl)-1,3-disiloxanediyl]-Thymidine

N6-Methyl-2'-deoxyadenosine