Tricyclic thromboxane A.sub.2 antagonists

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

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540543, 540575, 540596, 544359, 544366, 544370, 544375, 544380, 546 16, 546196, 546202, 546203, 546204, 548409, 548525, 548527, A61K 31495, C07D40512

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active

049944630

ABSTRACT:
Novel tricyclic compounds having a TXA.sub.2 antagonizing activity represented by formula (I): ##STR1## possess a potent antagonizing action against thromboxane A.sub.2 and also an antiallergic and/or antihistaminic activity, and are expected to have preventive and therapeutic effects on ischemic diseases, cerebro-vascular diseases, etc.

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