1,4,5,6,7,8-hexahydroquinoline compounds
CA 1282411 C · Owner: Bechem, Martin · Inventors: Meyer, Horst; Franckowiak, Gerhard; Gross, Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Circulation-active dihydropyridines of the formula in which, R1 is optionally substituted aryl or heterocyclic R2 is H, NO2, CN, C1-C8-alkylsulphonyl aryl or, carboalkoxy, R3 is alkyl or aryl, R4 is H or alkyl, X is C=O or a direct bond and, n is a number from 1 to 20, or physiologically acceptable salts thereof. A synthesis using morpholines or thiomorpholines is also disclosed.
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 April 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 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
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.