EP0810217A1 — Pyrazole derivatives and their pharmaceutical use as smooth muscle cell growth inhibitors
Assigned to Eneos Corp · Expires 1997-12-03 · 28y expired
What this patent protects
The present invention relates to a pyrazole derivative represented by formula ( I ) or (II) : wherein R 1 is hydrogen C2-C6 alkyl, benzyl or phenyl; each of R 2 and R 3 is hydrogen, C1-C6 alkyl or benzyl; each of R 4 and R 5 is hydrogen, C1-C6 alkyl, C3-C6 alk…
USPTO Abstract
The present invention relates to a pyrazole derivative represented by formula ( I ) or (II) : wherein R 1 is hydrogen C2-C6 alkyl, benzyl or phenyl; each of R 2 and R 3 is hydrogen, C1-C6 alkyl or benzyl; each of R 4 and R 5 is hydrogen, C1-C6 alkyl, C3-C6 alkenyl, C3-C8 cycloalkyl, benzyl or phenyl; X is oxygen or sulfur; R 5 is hydrogen, C2-C6 alkyl, C3-C6 alkenyl, C3-C8 cycloalkyl or benzyl when R 1 is benzyl, R 2 is ethyl, R 3 is hydrogen, and R 4 is hydrogen, and its pharmaceutical use.
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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