US Patent

US8501730 — Process for preparing benzazepine compounds or salts thereof

Composition of Matter · Assigned to Otsuka Pharmaceutical Co Ltd · Expires 2026-09-01 · 0y remaining

Vulnerability score 27/100 Strong — defensible against typical IPR challenges

What this patent protects

This patent protects a process for preparing benzazepine compounds or their salts in high yield and purity on an industrial scale.

USPTO Abstract

This invention provides a process for preparing benzazepine compounds of the formula (1): wherein X 1 is a halogen atom, R 1 and R 2 are a lower alkyl group, or salts thereof as well as intermediate benzoic acid compounds in high yield and high purity on industrial scale, which are useful as an intermediate for preparing a pharmaceutically active 2,3,4,5-tetrahydro-1H-1-benzazepine compound having vasopressin antagonistic activity.

Drugs covered by this patent

Patent Metadata

Patent number
US8501730
Jurisdiction
US
Classification
Composition of Matter
Expires
2026-09-01
Drug substance claim
Yes
Drug product claim
No
Assignee
Otsuka Pharmaceutical Co Ltd
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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