9-amino-1,2,3,4-tetrahydroacridin-1-ol and related compounds, a process for their preparation and their use as medicaments
CA 1292744 C · Owner: Hoechst-Roussel Pharmaceuticals Inc. · Inventors: Shutske, Gregory M.; Pierrat, Frank A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed compounds having the formula wherein n is 1, 2 or 3; X is hydrogen, loweralkyl loweralkoxy, halogen, hydroxy, nitro, trifluoromethyl NHCOR2 where R2 is loweralkyl, or NR3R4 where R3 and R4 are independently hydrogen or loweralkyl; R is hydrogen or loweralkyl; R1 is hydrogen, loweralkyl diloweralkylaminoloweralkyl, arylloweralkyl diarylloweralkyl, furylloweralkyl, thienylloweralkyl oxygen-bridged arylloweralkyl, oxygen-bridged diarylloweralkyl, oxygen-bridged furylloweralkyl or oxygen-bridged thienylloweralkyl; Y is C=O or CR5OH where R5 is hydrogen or loweralkyl; Z is CH2 or C=CR6R7 where R6 and R7 are independently hydrogen or loweralkyl; or Y and Z taken together is …
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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 December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
- 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
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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.