An amide derivative of amythiamicin
CA 2213057 A1 · Owner: Iinuma, Hironobu · Inventors: Okonogi, Tsuneo; Iinuma, Hironobu; Takeuchi, Tomio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel amide derivative of amythiamicin is now provided, which is represented by the general formula (I) (See Fig. I), wherein n is an integer of 1 to 6 R1 is a hydrogen atom, a carboxyl group or a hydroxylmethyl group and R2 is a, group of the formula -COOR3 where R3 is a hydrogen atom or a lower alkyl group or a benzyl group optionally substituted by a halogen or a hydroxyl group or R2 is a, group of the formula -NR4R5 where R4 is a hydrogen atom or a lower alkyl group and R5 is a hydrogen atom a lower, - 55 -, alkyl group, 3-aminopropyl group 3-2-(p-chloro or, bromophenyl)ethylaminopropyl group or 3-(n-butylamino)propyl group, or R2 is a methyl group, a hydroxyl group or a guanidino …
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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 August 15, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 15, 2019.
- 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.