Enzyme inhibiting peptide derivatives
CA 2016663 C · Owner: Guindon, Yvan · Inventors: Anderson, Paul Cates; Guindon, Yvan; Yoakim, Christiane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are peptide derivatives which inhibit the activities of human immunodeficiency virus (HIV) protease and renin. The peptide derivatives can be represented by general formula R1-R2-Y-R3-R4 wherein R1 is a derived amino acid based on an O4-(carboxymethyl)-tyrosyl residue R2 and R3 are amino, acid or analogous amino acid residues (R3 may optionally be absent), Y is a non-peptide linking unit e.g. statyl, and R4 is, NR17CHR18-C(O)p-Z wherein R17 is hydrogen or lower alkyl R18, is an amino acid or analogous amino acid side chain p is zero or, one and Z is a terminal group (e.g. hydroxy or amino) or R4 is, NR17CR18(R21)CH2OH wherein R17 and R18 are as noted hereinabove and R21 is …
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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 14, 1990 and granted April 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2012.
- 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
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.