Building blocks derived from 1,2-aminoalcohols
CA 2289120 A1 · Owner: Gabriel, Richard L. · Inventors: Gabriel, Richard L.; Jurayj, Jurjus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are novel compounds represented by structural Formula (XX) (XXI) or , (XXII); R1, R21 and R22 are independently an aliphatic group a substituted , aliphatic group, an aromatic group or a substituted aromatic group. R2 and R12 are independently -NR4R5 or -N+C-. R3 is -H or an alcohol protecting group. R4 and R5 are independently -H or an amine protecting group. R11 is a side chain of a naturally occurring amino acid or a protected side chain of a naturally occurring amino acid. R1 and R2, and R11 and R12 taken together with the , methine group to which they are bonded can form a moiety represented by , structural Formula (XXIII). R6 is -H or an amine protecting group. R7 is -H …
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 May 8, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2020.
- 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.