CA Patent

CA2064373A1 — Piperidine derivatives

Assigned to Eli Lilly and Co · Expires 1992-09-30 · 34y expired

What this patent protects

3,4,4-trisubstitutedpiperidinyl-N-alkyl-carboxylates and intermediates for their preparation are provided. These piperidine-N-alkylcarboxylates are useful as peripheral opioid antagonists.

USPTO Abstract

3,4,4-trisubstitutedpiperidinyl-N-alkyl-carboxylates and intermediates for their preparation are provided. These piperidine-N-alkylcarboxylates are useful as peripheral opioid antagonists.

Drugs covered by this patent

methylnaltrexone-bromide (METHYLNALTREXONE BROMIDE)

Patent Metadata

Patent number: CA2064373A1
Jurisdiction: CA
Classification: —
Expires: 1992-09-30
Drug substance claim: No
Drug product claim: No
Assignee: Eli Lilly and Co
Source: FDA Orange Book + USPTO grounding via Google Patents

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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