N-¬4-o-hydroxyphenyl-1,3-dioxan-5-yl-hexenoyl sulphonamides
CA 1284331 C · Owner: Smithers, Michael J. · Inventors: Smithers, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns novel N-4(Z)-6-(4-0hydroxyphenyl-1,3-dioxan-cls-5-yl)hexenoylsulphonamide derivatives of formula I of value as therapeutic agents. R1 is typically an alkoxyalkyl or phenoxyalkyl radical as defined hereinafter and R2 is alkyl benzyl, or phenyl. The invention also discloses salts of the formula I compounds as well as pharmaceutical compositions containing the compounds and processes for the production of the compounds.
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 May 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 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.