EP Patent

EP0544445A2 — Furyl-substituted purines, oxazolopyrimidines and pteridines as adenosine antagonists

Assigned to Syngenta Ltd · Expires 1993-06-02 · 33y expired

What this patent protects

Compounds of formula I, and pharmaceutically acceptable salts thereof, in which R1 is hydrogen (1-6C)alkyl or (1-4C)alkanoyl ; A is -N=CQ-O-, N=CQ-NR 8 -, -N=CQ-CH=Nor -N=CH-CQ=N- ; Q is 2-furyl ; R 8 is hydrogen or C1-4C)alkyl ; and R 2 has any of the mea…

USPTO Abstract

Compounds of formula I, and pharmaceutically acceptable salts thereof, in which R1 is hydrogen (1-6C)alkyl or (1-4C)alkanoyl ; A is -N=CQ-O-, N=CQ-NR 8 -, -N=CQ-CH=Nor -N=CH-CQ=N- ; Q is 2-furyl ; R 8 is hydrogen or C1-4C)alkyl ; and R 2 has any of the meanings given in the specification, processes for preparing the compounds and pharmaceutical compositions containing them. The compounds are useful as adenosine antagonists.

Drugs covered by this patent

Patent Metadata

Patent number
EP0544445A2
Jurisdiction
EP
Classification
—
Expires
1993-06-02
Drug substance claim
No
Drug product claim
No
Assignee
Syngenta 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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