EP0170105A2 — Benzoic acid derivatives
Assigned to Research Foundation Itsuu Laboratory · Expires 1986-02-05 · 40y expired
What this patent protects
A benzoic acid derivative represented by the formula (I): wherein R 1 , R 2 , R 3 , R 4 and R s may be the same or different, each represents hydrogen, middle and lower alkyl, and cycloalkyl harring 3 - 7 atoms with proviso each can not be hydrogen simultaneously, and b…
USPTO Abstract
A benzoic acid derivative represented by the formula (I): wherein R 1 , R 2 , R 3 , R 4 and R s may be the same or different, each represents hydrogen, middle and lower alkyl, and cycloalkyl harring 3 - 7 atoms with proviso each can not be hydrogen simultaneously, and both neighbouring substituents may be combined with each other to form a ring having 5 to 12 carbon atoms, R 6 represents hydroxyl, lower alkoxyl, a group of the formula -NR 7 'R 8 ', wherein R 7 ' and R e ' each represents hydrogen or lower alkyl, X represents a group of the formula wherein R 7 and R 8 represent hydrogen or lower alkyl. Furtheron a process to prepare this substances and a method to determ the type of leukemia is 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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