Prostaglandin analogues, process for their preparation and pharmaceutical compositions containing them
CA 1264320 C · Owner: Imaki, Katsuhiro · Inventors: Miyake, Hajimu; Okegawa, Tadao; Imaki, Katsuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel isomers of PGAs, PGDs, PGEs, PGFs, 6-keto-PGE1s, 6-keto-PGF1s PGI2s, 6,9?-nitrilo-PGl1s and 6,9?-methano-PGI2s having a, specific steric configuration which are replaced by an, alkyl (C1 to C8)-substituted cycloalkyl (C4 to C7) group in (lS,S) form, in (lS,R) form or in cis form at the 15- 16-, or 17-position of the PG skeleton and, alkyl esters, thereof, non-toxic salts thereof non-toxic acid addition, salts thereof and cyclodextrin clathrates thereof possessing more potent PG-like pharmacological activity than other isomers.
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 January 9, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 2007.
- 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.