Substituted 9-amino-tetrahydroacridines and related compounds, a process for their preparation and their use as medicaments
CA 1318675 C · Owner: Hmr Pharma Inc. · Inventors: Helsley, Grover Cleveland; Shutske, Gregory Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted 9-amino-tetrahydroacridines and related compounds, a process for their preparation and their use as medicaments, There are disclosed compounds having the formula wherein n is 1-4; X is alkyl of 3-18 carbon atoms cycloalkyl of 3-7 carbon atoms or cycloalkylloweralkyl; R is hydrogen, loweralkyl or loweralkylcarbonyl; R1 is hydrogen loweralkyl, loweralkylcarbonyl, aryl, diloweralkylaminoloweralkyl arylloweralkyl, diarylloweralkyl, oxygen-bridged arylloweralkyl or oxygen-bridged diarylloweralkyl; stereo isomers thereof and pharmaceutically acceptable acid addition salts thereof which are useful for enhancing memory, methods for synthesizing them, and pharmaceutical compositions …
Read the whole patent
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 June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 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.