3-alkylxanthines, intermediates, processes for their...

Details 3-alkylxanthines, intermediates, processes for their... 3-alkylxanthines, intermediates, processes for their...

C - Chemistry, Metallurgy

07

D

260/258

C07D 239/46 (2006.01)

Patent

CA 1142928

Abstract of the Disclosure The invention relates to compounds of the formula Image wherein R1 is n-pentyl, 2-methylbutyl, 3-methylbutyl, 2,2-dimethylpropyl, cyclopropyl, cyclobutyl, cyclopentyl or cyclohexylmethyl. The compounds are useful intermediates in the preparation of certain novel 3-substituted- 3,7-dihydro-1H-purine-2,6-dione compounds which display activity against chronic obstructive airway disease or cardiac disease.

391134

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