NCbz-guanosine

{9-[(2R,3R,4S,5R)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-3,4-dihydroxy-tetrahydro-furan-2-yl]-6-oxo-6,9-dihydro-1H-purin-2-yl}-carbamic acid benzyl ester

{9-[(2R,3R,4R,5R)-3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-5-hydroxymethyl-tetrahydro-furan-2-yl]-6-oxo-6,9-dihydro-1H-purin-2-yl}-carbamic acid benzyl ester

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

Acetic acid (2S,3R,4R,5S,6S)-4,5-bis-benzyloxy-6-[(2R,3R,4R,5R)-2-(2-benzyloxycarbonylamino-6-oxo-1,6-dihydro-purin-9-yl)-4-hydroxy-5-hydroxymethyl-tetrahydro-furan-3-yloxy]-2-methyl-tetrahydro-pyran-3-yl ester