Spirocyclic c-glycosides
CA 2278960 A1 · Owner: Hitchcock, Stephen Andrew · Inventors: Hamdouchi, Chafiq; Hitchcock, Stephen Andrew; Sanchez-Martinez, Concepcion
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved and a new synthetic route for the preparation of spirocyclic C-glycoside compounds having the following general structure are described. Novel derivatives of spirocyclic C-glycoside compounds are also disclosed which may be used as intermediates in the synthesis and evaluation of potential pharmaceutically active materials.
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
- Filed July 27, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2021.
- 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.