1-((2R,4S,5R)-5-((bis-(4-Methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxytetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione

for the following products 5'-DMT-2'-deoxyuridine | 5'-O-(4,4'-Dimethoxytrityl)-2'-deoxyuridine and 1-((2R,4S,5R)-5-((bis-(4-Methoxyphenyl)(phenyl)methoxy)methyl)-4-hydroxytetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione