EP0555478A1 — Pyrimidine derivative and medicine
Assigned to Nippon Shinyaku Co Ltd · Expires 1993-08-18 · 33y expired
What this patent protects
The invention aims at obtaining a novel compound which is excellent in central nervous system selectivity and reduced in side effects and has an activity of improving the function of learning and memory, thus providing an excellent medicine for dementia. The invention relates to …
USPTO Abstract
The invention aims at obtaining a novel compound which is excellent in central nervous system selectivity and reduced in side effects and has an activity of improving the function of learning and memory, thus providing an excellent medicine for dementia. The invention relates to a compound represented by general formula (I), a pharmacologically acceptable salt thereof, and an agent for remedying the disturbance of learning and memory containing the same as the active ingredient of formula (I), wherein R¹ and R² may be the same or different from each other and each represents hydrogen, hydroxy, alkoxy, trifluoromethyl or halogen; A represents methyl, trifluoromethyl or tertbutyl; and Y represents O or NH.
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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