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A novel synthesis of 3-(substituted)pyrimido[4,5-c]pyridazine-5,7(1H,6H)-diones.

ABSTRACT: An improved synthesis of 3-(substituted)pyrimido[4,5-c]pyridazine-5,7(1H,6H)-diones, a known subclass of 4-deazatoxoflavins, is reported. The approach involves treatment of 3-methyl-6-(1-methylhydrazinyl) uracil with representative phenyl and alkyl glyoxal monohydrates, which in turn are obtained by selenium dioxide oxidation of the corresponding phenyl and alkyl methyl ketones. The first entry into 4-monosubstituted isomers is also reported.

SUBMITTER: Turbiak AJ

PROVIDER: S-EPMC2987637 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature

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A novel synthesis of 3-(substituted)pyrimido[4,5-c]pyridazine-5,7(1H,6H)-diones.

Turbiak Anjanette J AJ Kampf Jeff W JW Hollis Showalter H D HD

Tetrahedron letters 20100301 9

An improved synthesis of 3-(substituted)pyrimido[4,5-c]pyridazine-5,7(1H,6H)-diones, a known subclass of 4-deazatoxoflavins, is reported. The approach involves treatment of 3-methyl-6-(1-methylhydrazinyl) uracil with representative phenyl and alkyl glyoxal monohydrates, which in turn are obtained by selenium dioxide oxidation of the corresponding phenyl and alkyl methyl ketones. The first entry into 4-monosubstituted isomers is also reported. ...[more]

PMID: 21103016

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