EP Patent

EP0367141A2 — Carbostyril derivatives

Assigned to Otsuka Pharmaceutical Co Ltd · Expires 1990-05-09 · 36y expired

What this patent protects

A novel carbostyril derivative and salt thereof represented by the formula (1), (wherein R is a group of the formula ((wherein R¹ is a C₁-C₃ alkoxy group)), a group of the formula ((wherein R² and R³ are each, at the same time, a chlorine atom, a bromine atom; a…

USPTO Abstract

A novel carbostyril derivative and salt thereof represented by the formula (1), (wherein R is a group of the formula ((wherein R¹ is a C₁-C₃ alkoxy group)), a group of the formula ((wherein R² and R³ are each, at the same time, a chlorine atom, a bromine atom; and R⁴ is a hydrogen atom or a chlorine atom)), 2-methyl-3-nitrophenyl group, 3,5-dichlorophenyl group, or a group of the formula ((wherein R⁵ is a chlorine atom or a bromine atom; and R⁶ is a methyl group)); the carbon-carbon bond between 3- and 4-position in the carbostyril skeleton is a single or double bond). The novel carbostyril derivative and salt thereof represented by the formula (1) is useful agent for treating schizophrenia.

Drugs covered by this patent

Patent Metadata

Patent number
EP0367141A2
Jurisdiction
EP
Classification
—
Expires
1990-05-09
Drug substance claim
No
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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