CPC C07K 14/575 (2013.01) [A61K 9/0019 (2013.01); A61K 9/08 (2013.01); A61K 9/2013 (2013.01); A61K 9/2018 (2013.01); A61K 9/2059 (2013.01); A61K 47/02 (2013.01); A61P 1/08 (2018.01); A61K 38/00 (2013.01)] | 29 Claims |
1. A GIP receptor agonist peptide represented by formula (I): P1-A1-A2-A3-A4-A5-A6-A7-A8-A9-A10-A11-A12-A13-A14-A15-A16-A17-A18-A19-A20-A21-A22-A23-A24-A25-A26-A27-A28-A29-A30-A31-A32-A33-A34-A35-A36-A37-A38-A39-A40-A41-P2 (SEQ ID NO: 4), or a salt thereof;
wherein
P1 represents a group represented by formula
—RA1,
—CO—RA1,
—CO—ORA1,
—CO—CORA1,
—SO—RA1,
—SO2—RA1,
—SO2—ORA1
—CO—NRA2RA3,
—SO2—NRA2RA3,
—C(═NRA1)—NRA2RA3, or
is absent,
wherein RA1, RA2, and RA3 each independently represent a hydrogen atom, an optionally substituted hydrocarbon group, or an optionally substituted heterocyclic group;
P2 represents —NH2 or —OH;
A1 represents Tyr, 3,5-Dix Tyr, D-Tyr, 3,5 di-Br-Tyr, Phe, αMethyl-Phe, mono-halo-Phe, bis-halo-Phe, -Tyr, -D-Phe, -D-Tyr, des-amino-Phe, or des-amino-Tyr;
A2 represents Aib;
A3 represents Glu or Pro;
A4 represents Gly, or Ser;
A5 represents Thr, D-Iva, Glu, Iva, or Ser;
A6 represents Phe, or Val;
A7 represents Ile, or Val;
A8 represents Ser;
A9 represents Asp, Leu, or Phe;
A10 represents Tyr;
A11 represents Aib or Ser;
A12 represents Ile, Ala, or Aib;
A13 represents Aib, Ala, Gln, Leu, or D-Iva;
A14 represents Leu;
A15 represents Asp, Lys, Ser, or Tyr;
A16 represents Arg, or Lys;
A17 represents Aib, or Gln;
A18 represents Ala or His;
A19 represents Gln or Ser;
A20 represents Aib, Ala or Gln;
A21 represents Asn, Asp, Glu, Leu, or Ser;
A22 represents Phe or αMePhe;
A23 represents Ile or Val;
A24 represents Arg, Asn, Asp, Lys, or Lys(Ac);
A25 represents Trp;
A26 represents Aib, Iva, or Leu;
A27 represents Leu;
A28 represents Ala, Arg, Lys, or Lys(Ac);
A29 represents Gln or Gly;
A30 represents Arg or Gly;
A31 represents Pro, Gly ψ, or a deletion;
A32 represents Ser, Gly, ψ, or a deletion;
A33 represents Ser, Gly, ψ, or a deletion;
A34 represents Gly, ψ or a deletion;
A35 represents Ala, Ser, ψ, or a deletion;
A36 represents Pro, Gly, ψ, or a deletion;
A37 represents Pro, Gly, ψ, or a deletion;
A38 represents Pro, Gly, ψ, or a deletion;
A39 represents Ser, Gly, ψ, or a deletion;
A40 represents, Ser, ψ, or a deletion;
A41 represents Gly, ψ, or a deletion;
and wherein any one or two amino acids selected from A31 to A41 represent ψ, wherein ψ is a residue independently selected from Lys, Orn, and Cys and wherein the side chain of said residue is substituted.
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