AU675870B2 — Endothelin antagonistic heteroaromatic ring-fused cyclopentene derivatives
Assigned to MSD KK · Expires 1997-02-20 · 29y expired
What this patent protects
A cyclopentene derivative represented by general formula (I) and a pharmaceutically acceptable salt thereof: wherein Ar<1> and Ar<2> represent each independently phenyl, thienyl, pyridyl, indolyl, benzofuranyl or dihydrobenzofuranyl; A represents a group that is combi…
USPTO Abstract
A cyclopentene derivative represented by general formula (I) and a pharmaceutically acceptable salt thereof: wherein Ar<1> and Ar<2> represent each independently phenyl, thienyl, pyridyl, indolyl, benzofuranyl or dihydrobenzofuranyl; A represents a group that is combined with the adjacent carbon-carbon double bond to form a 5-or 6-membered heteroaromatic ring containing one to four heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; and Y represents -CO-R<4>, SO3H, PO3H2, tetrazol-5-yl, 2-oxo-3H-1,2,3,5-oxathiadiazol-4-yl or 5-oxo-4H-1,2,4-oxadiazol-3-yl. <CHEM>
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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