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Помогите, пожалуйста, со статьями из J. Chem. Soc.

J. Masson Gulland and Leonard F. Story
125. Constitution of the purine nucleosides. Part VII. Guanosine and guanine deoxyribosideю J. Chem. Soc., 1938, 692 - 694

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http://dx.doi.org/10.1039/JR9380000692

60. The application of the Hofmann reaction to the synthesis of heterocyclic compounds. Part I. Synthesis of alloxazine from quinoxaline-2 : 3-dicarboxylic acid
R. A. Baxter and F. S. Spring, J. Chem. Soc., 1945, 229

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http://dx.doi.org/10.1039/JR9450000229

R. A. Baxter and F. S. Spring. 61. The application of the Hofmann reaction to the synthesis of heterocyclic compounds. Part II. Synthesis of xanthine from glyoxaline-4 : 5-dicarboxyamide and of 9-methylxanthine from 1-methylglyoxaline-4 : 5-dicarboxyamide

J. Chem. Soc., 1945, 232 - 234

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http://dx.doi.org/10.1039/JR9450000232

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