N6-methyl-9-(5-O-(tert-butyldiphenylsilyl)-3-deoxy-2-Se-phenyl-2-seleno-β-D-erythro-pentofuranosyl)adenine

1-(5-O-(tert-butyldiphenylsilyl)-2,3-dideoxy-β-D-glycero-pentofuranosyl)uracil

9-(5-O-(tert-butyldiphenylsilyl)-3-deoxy-2-Se-phenyl-2-seleno-β-D-erythro-pentofuranosyl)hypoxanthine

5(S)-<<(tert-butyldiphenylsilyl)oxy>methyl>-4(S)-methyldihydro-2-furanone

(2S,3S)-1-(tert-Butyl-diphenyl-silanyloxy)-3-methyl-5-trityloxy-pentan-2-ol