EP0293063A1 — 2-Phenylpurinone derivatives, processes for their preparation, and their use as well as intermediates
Assigned to Smith Kline and French Laboratories Ltd · Expires 1988-11-30 · 37y expired
What this patent protects
Compounds of the formula (1) : and pharmaceutically acceptable salts thereof are described, wherein R¹ is C 1-6 alkyl or C 2-6 alkenyl, and R² is hydrogen or hydroxy. These compounds have vasodilator, bronchodilator and anti-allergic properties. Pharmaceutical composi…
USPTO Abstract
Compounds of the formula (1) : and pharmaceutically acceptable salts thereof are described, wherein R¹ is C 1-6 alkyl or C 2-6 alkenyl, and R² is hydrogen or hydroxy. These compounds have vasodilator, bronchodilator and anti-allergic properties. Pharmaceutical compositions are described as are methods of use. Processes for the preparation of the compounds of the formula (1) are described.
Drugs covered by this patent
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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