GB Patent

GB2236751B — Heterocyclic compounds

Assigned to John Wyeth and Brother Ltd · Expires 1993-04-28 · 33y expired

What this patent protects

Compounds of formula <IMAGE> wherein R1 is hydrogen or one or more specified substituents, X is -O- or -NR2- where R2 is lower alkyl, lower alkenyl, lower alkynyl, aryl or specified substituted lower alkyl or R2 represents a group -Z- which is connected to the 8-positio…

USPTO Abstract

Compounds of formula <IMAGE> wherein R1 is hydrogen or one or more specified substituents, X is -O- or -NR2- where R2 is lower alkyl, lower alkenyl, lower alkynyl, aryl or specified substituted lower alkyl or R2 represents a group -Z- which is connected to the 8-position of the aromatic ring so as to form a heterocyclic ring of 5 to 7 ring members, Y is O or NR3 where R3 is hydrogen or lower alkyl, and B is a saturated azabicyclic ring (e.g. tropanyl or quinuclidinyl) or a N-oxide thereof and their acid addition salts are 5-HT3 antagonists which may be used in, for example, the treatment of neuro-psychiatric disorders.

Drugs covered by this patent

Patent Metadata

Patent number
GB2236751B
Jurisdiction
GB
Classification
—
Expires
1993-04-28
Drug substance claim
No
Drug product claim
No
Assignee
John Wyeth and Brother 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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