Tetrazolyl-substituted pyrido[1,2-a]pyrimidines and use as SRS-A antagonists
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United States of America Patent
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Mar 28, 1989
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N/A
app pub date -
Oct 1, 1986
filing date -
Oct 3, 1985
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Expired
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Abstract
Pyrido[1,2-a]pyrimidine derivatives of the general formula [I] and their physiologically acceptable salts are provided: ##STR1## where R is a hydrogen atom, a halogen atom or a methyl group, and n is a whole number of 0, 1 or 2. The pyrido[1,2-a]-pyrimidine derivatives and their salts exhibit an excellent antagonistic effect on slow-reacting substance of anaphylaxis and, therefore, are useable for the treatment of allergic diseases.
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