3-Tetrazolo-5,6,7,8-substituted-pyrido{8 1,2-a{9 pyrimidin-4-ones

摘要

A novel series of optionally substituted 3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a]pyrimidin-4-ones is provided for use as inhibitors of allergic reactions. The compounds exhibit antiallergy activity by both oral and parenteral routes of administration.