EP1123296B1 — PYRAZOLOPYRIMIDINONE cGMP PDE5 INHIBITORS FOR THE TREATMENT OF SEXUAL DYSFUNCTION
Assigned to Pfizer Ltd Great Britain · Expires 2003-09-17 · 23y expired
What this patent protects
There is provided compounds of formula (IA) and of formula (IB), wherein R<1>, R<2>, R<3>, R<4> and A have meanings given in the description, which are useful in the curative and prophylactic treatment of medical conditions for which inhibition of a cyclic…
USPTO Abstract
There is provided compounds of formula (IA) and of formula (IB), wherein R<1>, R<2>, R<3>, R<4> and A have meanings given in the description, which are useful in the curative and prophylactic treatment of medical conditions for which inhibition of a cyclic guanosine 3',5'-monophosphate phosphodiesterase (e.g. cGMP PDE5) is desired.
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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