Perhydroazacycloalka 1,2-a imidazole derivatives and use thereof as nootropic agents
CA 1324378 C · Owner: Riccaboni, Maria Teresa · Inventors: Riccaboni, Maria Teresa; Farina, Carlo; Pinza, Mario
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
NEW PERHYDROAZACYCLOALKA1,2-AIMIDAZOLE DERIVATIVES AND USE THEREOF AS NOOTROPIC AGENTS, Compounds of structure (1) (I), in which, R1 is hydrogen, C1-4alkyl CHR6CONHR7 or CHR6COOR7, in which R6 and R7 are each hydrogen or C1-4alkyl; R2 is hydrogen, C1-5alkyl or any residue R2 of an amino acid R2CH(NH2)COOH; R3 is hydrogen C1-4alkyl, CONH2 or CO2R8 in which R8 is hydrogen or C1-4alkyl; and n is 2, 3 or 4 processes for their preparation, intermediates useful in their preparation, pharmaceutical formulations containing them and their use in therapy as nootropic agents.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 16, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.