Patent ID: 9624268
Date: 2017-04-18
CPC Classifications: A61K,A61P,C07K,G01N

Claim:
1. A peptide inhibitor of an interleukin-23 receptor, or a pharmaceutically acceptable salt or solvate thereof, wherein the peptide inhibitor comprises the amino acid sequence of Formula Ir: wherein X1 is any amino acid or absent; X2 is any amino acid or absent; X3 is any amino acid or absent; X4 is Cys, Pen, hCys, D-Pen, D-Cys, D-hCys, Met, Glu, Asp, Lys, Orn, Dap, Dab, D-Dap, D-Dab, D-Asp, D-Glu, D-Lys, Sec, 2-chloromethylbenzoic acid, mercapto-propanoic acid, mercapto-butyric acid, 2-chloro-acetic acid, 3-choro-propanoic acid, 4-chloro-butyric acid, 3-chloro-isobutyric acid, Abu, β-azido-Ala-OH, propargylglycine, 2-(3′-butenyl)glycine, 2-allylglycine, 2-(3′-butenyl)glycine, 2-(4′-pentenyl)glycine, 2-(5′-hexenyl)glycine, or absent; X5 is any amino acid; X6 is any amino acid; X7 is Trp, Glu, Gly, Ile, Asn, Pro, Arg, Thr or OctGly, or a corresponding α-methyl amino acid form of any of the foregoing; X8 is any amino acid; X9 is Cys, Pen, hCys, D-Pen, D-Cys, D-hCys, Glu, Lys, Orn, Dap, Dab, D-Dap, D-Dab, D-Asp, D-Glu, D-Lys, Asp, Leu, Val, Phe, Ser, Sec, Abu, β-azido-Ala-OH, propargylglycine, 2-2-allylglycine, 2-(3′-butenyl)glycine, 2-(4′-pentenyl)glycine, Ala, hCys, Met, MeCys, (D)Tyr or 2-(5′-hexenyl)glycine; X10 is Tyr, Phe(4-OMe), 1-Nal, 2-Nal, Aic, α-MePhe, Bip, (D)Cys, Cha, DMT, (D)Tyr, Glu, His, hPhe(3,4-dimethoxy), hTyr, N-Me-Tyr, Trp, Phe(4-CONH X11 is 2-Nal, 1-Nal, 2,4-dimethylPhe, Bip, Phe(3,4-Cl X12 is His, Phe, Arg, N-Me-His, Val, Cav, Cpa, Leu, Cit, hLeu, 3-Pal, t-butyl-Ala, α-MeLys, D-Ala, (D)Asn, (D)Asp, (D)Leu, (D)Phe, (D)Tyr, Aib, α-MeLeu, α-MeOrn, β-Aib, β-Ala, βhAla, βhArg, βhLeu, βhVal, β-spiro-pip, Glu, hArg, Ile, Lys, N-MeLeu, N-MeArg, Ogl, Orn, Pro, Gln, Ser, Thr, Tle, t-butyl-Gly, 4-amino-4-carboxy-tetrahydropyran (THP), Achc Acpc, Acbc, Acvc, Agp, Aib, α-DiethylGly, α-MeLys(Ac), α-MeOrn, α-MeSer, α-MeVal, Cha, Cit, Cpa, (D)Asn, Glu, hArg, or Lys, or a corresponding α-methyl amino acid form of any of the foregoing; X13 is Thr, Sarc, Glu, Phe, Arg, Leu, Asn, Cit, Lys, Arg, Orn, Val, βhAla, Lys(Ac), (D)Asn, (D)Leu, (D)Phe, (D)Thr, Ala, α-MeLeu, Aib, β-Ala, β-Glu, βhLeu, βhVal, β-spiro-pip, Cha, Chg, Asp, Dab, Dap, α-DiethylGly, hLeu, Asn, Ogl, Pro, Gln, Ser, β-spiro-pip, Thr, Tba, Tle or Aib, or a corresponding α-methyl amino acid form of any of the foregoing; X14 is Phe, Tyr, Glu, Gly, His, Lys, Leu, Met, Asn, Lys(Ac), Dap(Ac), Asp, Pro, Gln, Arg, Ser, Thr, Tic or βhPhe, or a corresponding α-methyl amino acid form of any of the foregoing; X15 is Gly, Ser, Thr, Gln, Ala, (D)Ala, (D)Asn, (D)Asp, (D)Leu, (D)Phe, (D)Thr, Aea, Asp, Asn, Glu, Phe, Gly, Lys, Leu, Pro, Arg, β-Ala, or Sarc, or a corresponding α-methyl amino acid form of any of the foregoing; X16 is any amino acid or absent; X17 is any amino acid or absent; X18 is any amino acid or absent; X19 is any amino acid or absent; and X20 is any amino acid or absent, wherein the peptide inhibitor is cyclized via a bond between X4 and X9, and wherein the peptide inhibitor inhibits the binding of an interleukin-23 (IL-23) to an IL-23 receptor.