New 1,7-annelated 1h-indole-2-carboxylic acid-n-(1,4-benzodiazepin-3-yl) amides
CA 2011658 C · Owner: Solvay Pharmaceuticals Gmbh · Inventors: Waldeck, Harald; Hamminga, Derk; Van Wijngaarden, Ineke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds corresponding to the formula I (see above formula), in which, R1 represents hydrogen lower alkyl or cycloalkylalkyl, with 4-7 carbon atoms R2 represents hydrogen, halogen, lower alkyl lower alkoxy, or trifluoromethyl, and, R3 represents hydrogen halogen, lower alkyl or lower, alkoxy, or R2 and R3 together denote an alkylenedioxy group R4 represents cycloalkyl with 5 to 6 carbon atoms thiophene or optionally substituted phenyl R5 represents hydrogen or halogen, R6 represents hydrogen halogen, lower alkyl, lower alkoxy, or trifluoromethyl and, Z represents an alkylene chain with 2-4 carbon atoms which can optionally be mono- or disubstituted by lower alkyl or onto which a …
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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
- Filed March 7, 1990 and granted May 16, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 2012.
- 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.