Oxalylamino acid derivatives, processes for their preparation and their use as medicaments for inhibiting proline hydroxylase
CA 2042282 A1 · Owner: Baader, Ekkehard · Inventors: Baader, Ekkehard; Gunzler-Pukall, Volkmar; Burghard, Harald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dr. FI/AL Abstract of the Disclosure, Title: Oxalylamino acid derivatives processes, for their preparation and their use as medicaments for inhibiting proline, hydroxylase The invention relates to oxalylamino acid derivatives of the formula I, in which, R and R' are identical or different and are C1-C8-alkyl or hydrogen, R1 is hydrogen or C1-C4-alkyl R2 is hydrogen, C1-C8-alkyl, C1-C3-alkoxy carboxyl, C1-C6-alkoxycarbonyl, aryl, SH NH2 or halogen, where the alkyl radicals are unsubstituted or substituted by aryl, OH, SH or NH2, or R1 and R2 together are a C2-C4-alkylene chain and the compounds in their predominantly pure D- and L- The compounds are distinguished as excellent inhibitors of …
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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 May 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2013.
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Timeline
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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.