CA2206201A1 — Pyrazole derivatives and their pharmaceutical use
Assigned to Eneos Corp · Expires 1997-11-29 · 28y expired
What this patent protects
The present invention relates to a pyrazole derivative represented by formula ( I ) or (II) : ( I ) (II) wherein R1 is hydrogen C2-C6 alkyl, benzyl or phenyl; each of R2 and R3 is hydrogen, C1-C6 alkyl or benzyl; each of R4 and R5 is hydrogen, C1-C6 alkyl, C3-C6 …
USPTO Abstract
The present invention relates to a pyrazole derivative represented by formula ( I ) or (II) : ( I ) (II) wherein R1 is hydrogen C2-C6 alkyl, benzyl or phenyl; each of R2 and R3 is hydrogen, C1-C6 alkyl or benzyl; each of R4 and R5 is hydrogen, C1-C6 alkyl, C3-C6 alkenyl, C3-C8 cycloalkyl, benzyl or phenyl; X is oxygen or sulfur; R5 is hydrogen, C2-C6 alkyl, C3-C6 alkenyl, C3-C8 cycloalkyl or benzyl when R1 is benzyl, R2 is ethyl, R3 is hydrogen, and R4 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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