2',3'-O-bis[(tert-butyl)dimethylsilyl]-2-N-(4,4'-dimethoxytrityl)guanosine

Acetic acid (2S,3R,4R,5S,6R)-4,5-bis-benzyloxy-6-[(2R,3R,4R,5R)-5-(2-benzyloxycarbonylamino-6-oxo-1,6-dihydro-purin-9-yl)-3,4-bis-(tert-butyl-dimethyl-silanyloxy)-tetrahydro-furan-2-ylmethoxy]-2-methyl-tetrahydro-pyran-3-yl ester

5'-O,3'-O,2'-O-tris(tert-butyldimethylethylsilyl)-6-O-benzyl-2-bromoguanosine

2-N-[2-(6-O-benzylacycloinosyl)]-6-O-benzylguanosine

2-N-[2-(2'-O-tert-butyldimethylethylsilyl-6-O-benzylacycloinosyl)]-5'-O,3'-O,2'-O-tris(tert-butyldimethylethylsilyl)-6-O-benzylguanosine