EP0837052A1 — Bicyclic amino derivatives and pgd 2 antagonist containing the same
Assigned to Shionogi and Co Ltd · Expires 1998-04-22 · 28y expired
What this patent protects
A compound of the formula (I): wherein for example, a compound below: wherein R 1 is CH 3 , H or Na; and X1-X2-X3 is or a salt or a hydrate thereof is useful as a PGD 2 antagonist and can be used as a drug for treating diseases in which mast cell dysfunction is invo…
USPTO Abstract
A compound of the formula (I): wherein for example, a compound below: wherein R 1 is CH 3 , H or Na; and X1-X2-X3 is or a salt or a hydrate thereof is useful as a PGD 2 antagonist and can be used as a drug for treating diseases in which mast cell dysfunction is involved, for example, systemic mastocytosis and disorder of systemic mast cell activation, and also tracheal contraction, asthma, allergic rhinitis, allergic conjunctivitis, urticaria, injury due to ischemic reperfusion, and as an anti-inflammatory agent. It is particularly useful in the treatment of nasal occlusion.
Drugs covered by this patent
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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