(2S,3S,4S)-3,4-dihydroxy-4-hydroxymethyl-2-((p-toluenesulfonyloxy)methyl)tetrahydrofuran

(2S,3S,4R)-4-acetoxymethyl-3,4-dihydroxy-2-(thymin-1-ylmethyl)tetrahydrofuran

(2S,3S,4S)-4-acetoxy-3-benzyloxy-4-benzyloxymethyl-2-((p-toluenesulfonyl)oxymethyl)tetrahydrofuran

(2S,3S,4R)-3,4-dihydroxy-4-(4,4'-dimethoxytrityl)oxymethyl-2-((thymin-1-yl)methyl)tetrahydrofuran

(2S,3S,4R)-4-acetoxy-3-hydroxy-4-(4,4'-dimethoxytrityl)oxymethyl-2-((thymin-1-yl)methyl)tetrahydrofuran