Secondary amines
CA 1253870 A · Owner: Beecham Group P.L.C. · Inventors: Cantello, Barrie C.C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound of formula (I):, (I) or a pharmaceutically acceptable salt, ester or amide thereof, in which:, W is an optionally substituted phenyl group of the formula, wherein R1 is hydrogen or fluorine R2 is hydrogen, C1-6 alkyl, halogen or trifluoromethyl; or W is a phenoxymethyl or benzofuran-2-yl group;, R3 is C1-12 alkyl or phenyl C1-6 alkyl; A is hydrogen or methyl, X is carboxy, -Z-CO2H -Z-OH, T-Z-CO2H, -Z-NR4R5, -T-Y-OM, -T-Y-NR4R5 or -T-R6, in, the para- or meta-position with respect to the -(CH2)n group, wherein, R4 and R5 are each hydrogen or C1-6 alkyl R6 is C1-6 alkyl, T is 0, S, -NH or -N-R7 in which R7 is C1-6, alkyl, Z is C1-10 straight or branched alkylene optionally …
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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 May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
- 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.