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5’-O-dmtr- 2’-o-(2-methoxyethyl)-uridine

5’-O-dmtr-2’-o-(2-methoxyethyl)-5-methyl- uridine

N-benzoyl-5’-o- dmtr-2’-o-(2-methoxyethyl)-adenosine

2-O-methylthymidine

2’-Azido-2’-deoxy-5-methyl uridine

7,8-Dihydro-8- thioxo- adenosine

1-[(2R,6s)-6-(hydroxymethyl)-2-morpholinyl]-2,4(1h,3h)-pyrimidinedione

1-[(2R,6s)-6-(hydroxymethyl)-2-morpholinyl]-5-methyl-2,4(1h,3h)-pyrimidinedione

N-[1,2-dihydro-1-[(2r,6s)-6-(hydroxymethyl)-2-morpholinyl]-2-oxo-4-pyrimidinyl]- benzamide

N-[9-[(2r,6s)-6-(hydroxymethyl)-2-morpholinyl]-9h-purin-6-yl]- benzamide