THE ULTRAVIOLET PHOTOCHEMISTRY OF DEOXYURIDYLYL (3′→5′) DEOXYURIDINE

Abstract
"Deoxyuridylyl (3[image][forward arrow]5[image]) deoxyuridine has been irradiated with ultraviolet light. Four major photoproducts have been separated. Two appear to contain uracil dimer groupings; the other 2 seem to have, respectively, one and both uracil moieties converted to 5-hydro-6-hydroxyuracil. The quantum yields for the production of these compounds are such that at longer wavelengths the production of hydrates is favored, while at shorter wavelengths the production of dimers proceeds more efficiently.