4 - Oxo - 4h - pyrido bracket on 1,2 - a bracket to pyrimidine - 3 - n - (1h - tetrazole - 5 - y) carboxamides, process for their preparation and pharmaceutical agent

摘要

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