Basic ethers of aryl-oxy-tetrahydroisoquinoline
CA 1076119 A · Owner: Beecham Group Limited · Inventors: Gardner, Derek V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula (II) are disclosed (II), and salts thereof wherein R1 is a C1-6 alkyl C3-6 cycloalkyl phenyl, napthyl, aralkyl substituted phenyl or substituted napthyl group; R2 is a group:, , wherein R6 is a hydrogen atom or a C1-6 alkyl group R7 is a hydrogen atom, or a C1-6 alkyl phenyl, tolyl, or benzyl group or R6 is linked to R7 so that the NR6R7 moiety is a 5-, 6- or 7- membered ring R8 is a hydrogen, atom or a C1-4 alkyl group or is joined to R6 to form part of a morpholino ring and R9 and R10 are each hydrogen atoms or C1-4 alkyl groups; R3 is a hydrogen atom or a C1-6 alkyl or a trifluoromethyl group; R4 is a hydrogen atom or a C1-6 alkyl, benzyl or phenyl group or an …
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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 April 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 1997.
- 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.