Substituted derivatives of piperizinylcamphorsulfonyl oxytocin antagonists
CA 2078264 A1 · Owner: Bock, Mark G. · Inventors: Williams, Peter D.; Bock, Mark G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula: 81/FPG45, - i - 18449, wherein R is oxime hydroxy, halolgen, cyclic epoxide, alkylcarbonyloxy alkoxycarbonylalkoxy, trihalo-, alkylsulfonyloxo or unsubstituted or substituted oxo, where said substituent is unsubstituted or substituted saturated 6-membered heterocyclic rings having 1 or 2 heteroatoms which are N, and said substituent is alkyl. The compounds of formula I are oxytocin antagonists useful in the treatment of preterm labor dysmenorrhea and for the stoppage of labor preparatory to cesarean delivery. Also disclosed are pharmaceutical compositions containing these compounds methods, of their use and methods of their preparation.
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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 September 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2014.
- 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
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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.