Study on Oxazolopyrimidines. V. Preparation of 9-Substituted Hypoxanthines <I>via</I> 7-Aminooxazolo[5,4-<I>d</I>]pyrimidines

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概要

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• Reaction of 4-cyano-5-ethoxymethylenaminooxazoles with aliphatic amines gave 7-alkylaminooxazolo[5,4-<I>d</I>]pyrimidines. The structure of these compounds was discussed on the basis of spectroscopic properties. These oxazolopyrimidines were converted to 9-alkylhypoxanthines by treatment with aqueous alkali (Method A) or by heating in formamide (Method B). Reaction of the ethoxymethylenamino compounds with aromatic amines gave 9-arylhypoxanthines directly (Method C).

• 公益社団法人 日本化学会の論文

著者

• Ohtsuka Yozo

  Sagami Chemical Research Center

関連論文

• The Formation of 6,8-Dihydroxypurine by the Oxidation of 7-Aminooxazolo[5,4-d]pyrimidine with Hydrogen Peroxide-Acetic Acid
• Study on Oxazolopyrimidines. II. Conversion of 7-Aminooxazolo-[5,4-d]pyrimidines into Hypoxanthine Derivatives
• Study on Oxazolopyrimidines. VI. Formation of 3-Substituted Xanthines via 7(6H)-Iminooxazolopyrimidines
• Study on Oxazolopyrimidines. V. Preparation of 9-Substituted Hypoxanthines via 7-Aminooxazolo[5,4-d]pyrimidines

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