Amino acid-derived cyclic phosphonamides and methods of synthesizing the same
CA 2419775 C · Owner: Mcreynolds, Matthew D. · Inventors: Hanson, Paul R.; Mcreynolds, Matthew D.; Sprott, Kevin T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New phosphonamide compounds and methods of forming those compounds are provided. In one embodiment, the inventive methods comprise subjecting an opened-ring phosphonamide template to a ring-closing metathesis reaction in the presence of a ring-closing catalyst (e.g. a Grubbs catalyst) to yield a phosphonamide. In another embodiment, the inventive methods comprise reacting a template structure with a phosphorus (III) compound to yield the phosphonamide. Advantageously, in either embodiment the template structures , can be provided with a wide array of functional groups (e.g. amino acid side chains, peptides) chosen to provide particular properties to the compound.
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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 6, 2001 and granted December 2, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2023.
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