Thiazolo[3,2-a][1,2,3]triazolo[4,5-d]pyrimidine and [1,3,4]thiadiazolo[3,2-a][1,2,3]triazolo[4,5-d]pyrimidine derivatives
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United States of America Patent
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Mar 24, 1987
Grant Date -
N/A
app pub date -
Apr 25, 1985
filing date -
Apr 25, 1984
priority date (Note) -
Expired
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Abstract
Novel triazolopyrimidine compounds represented by the formula (I) and physiologically acceptable salts thereof are disclosed. These compounds have an excellent anti-allergic activity in oral administration and are useful for treatment and prophylaxis of allergic diseases such as bronchial asthma, allergic gastro-intestinal disorders, allergic rhinitis, hay fever, urticaria and the like.
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