1,6-dialkyl-4-(pyridyl)-1,4-dihydropyridine -3,5-dicarboxylic acid-3-amino alkyl ester-5-alkyl ester derivatives
CA 1295331 C · Owner: Ashimori, Atsuyuki · Inventors: Ashimori, Atsuyuki; Yokoyama, Kazumasa; Fukaya, Chikara
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a dihydropyridine derivative having the formula, wherein R'1 denotes methyl chlorine, bromine, fluorine, trifluoromethyl nitro, cyano or methoxy, R7 denotes, benzyl; and the dihydropyridine links to the 2- 3-, or, 4-position of the pyridine. The compound has an activity as a Ca-antagonist and is useful for treating vascular disorders such as coronary artery disease, celebral artery disease hypertension and the like.
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 February 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
- 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.