Glucopyranosyloxybenzylbenzene derivatives and medicinal use thereof
CA 2437240 C · Owner: Fujikura, Hideki · Inventors: Fujikura, Hideki; Tatani, Kazuya; Fushimi, Nobuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides glucopyranosyloxybenzylbenzene derivatives represented by the general formula: (see formula I), wherein P represents a hydrogen atom or a group forming a prodrug; R1 represents a hydrogen atom, an optionally substituted amino group, a carbamoyl group, an optionally substituted lower alkyl group, an optionally substituted lower alkoxy group etc.; R2 , represents a hydrogen atom or a lower alkyl group; and R3 represents an optionally substituted lower alkyl group an , optionally substituted lower alkoxy group an optionally , substituted lower alkylthio group etc. which have an improved , oral absorption and exert an inhibitory activity in human SGLT2 and …
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 February 13, 2002 and granted March 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 13, 2024.
- 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.