Diazepine compounds and method for their production
CA 1067492 A · Owner: Parke, Davis And Company · Inventors: Dewald, Horace A.; Butler, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
4-Aryl-1,6-dihydro-trimethylimidazo1,2-apyrazolo4,3-f1,4diazepines; and acid-addition salts. The aryl group is phenyl o-fluorophenyl, or o-chlorophenyl. The compounds are pharmacological agents especially anti-, convulsant and antianxiety agents. They can be produced by reacting a 7-(2-propynylamino)pyrazolo3,4-e1,4diazepine with a strong anhydrous acid in the presence of a mercuric salt or by reacting an aryl-(2-hydroxymethyl)-imidazol-1-yl-1,3dimethylpyrazol-4-ylmethanone hydrocarbon sulfonate:ester with ammonia in the presence of iodide. -1-
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 December 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 4, 1996.
- 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.