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Cytosine glycol

Irradiation of air-free solutions of pyrimidines can give products resembling some of those produced by ultraviolet light, but probably by a quite different mechanism. Irradiation of 1,3-dimethyluracil with 200 kV X-rays produces not only the expected 5,6-glycol, but also 6-hydroxyl-l,3-dimethyl-5-hydrouracil, the same isomer as the UV-produced hydrate discussed elsewhere in this chapter. The yield of the hydroxy compound is low, G = 0.35 molecules/100 eV absorbed. Cytosine glycol is formed in gamma-irradiated cytosine solutions, and this deaminates completely to the uracil glycol. These products are probably formed by addition of an OH to the 6-position of the pyrimidine and then dismutation of hydroxy radical. The major products formed in the radiolysis of air-free solutions of pyrimidines or purines have not yet been identified. [Pg.285]

Dizdaroglu M, Holwitt E, Hagan MP, Blakely WF (1986) Formation of cytosine glycol and 5,6-di-hydroxycytosine in deoxyribonucleic acid on treatment with osmium tetroxide. Biochem J 235 531-536... [Pg.500]

See other pages where Cytosine glycol is mentioned: [Pg.4]    [Pg.204]    [Pg.204]    [Pg.18]    [Pg.836]    [Pg.837]    [Pg.837]    [Pg.838]    [Pg.209]    [Pg.485]    [Pg.538]    [Pg.454]    [Pg.246]    [Pg.247]    [Pg.1356]    [Pg.1357]    [Pg.518]    [Pg.88]    [Pg.709]    [Pg.710]    [Pg.32]    [Pg.358]    [Pg.160]   
See also in sourсe #XX -- [ Pg.246 , Pg.247 ]

See also in sourсe #XX -- [ Pg.518 ]



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10- cytosin

Cytosine

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