A series of 1,6-dihydro-6-oxo-2-(ortho-substituted phenyl)pyrimidine-5-carboxylic acid derivatives is provided for use as inhibitors of allergic reactions. The compounds show antiallergy activity by both oral and parenteral routes of administration.
This invention relates to phenylpyrimidone derivatives which have bronchodilator activity. A compound of the invention is N-methyl 1,6-dihydro-6-oxo-2-(2-propoxyphenyl)pyrimidine-5-carboxamide.