| 摘要 |
There A peptide selected from the group having the formulae: alpha ) X-R<1>-R<2>-R<3>-R<4>-R<5>-R<6>-Thr-R<8>-R<9>-R<10>-R<11>-R<12>-Val-Leu-R<15>-Gln-Leu-Ser-R<19>-R<20>-R<21>-Leu-Leu-Gln-Asp-Ile-R<27>-R<28>-R<29>, wherein X is H, Ac, Aqc, IAc, BrProp, For, Ibu, Nac, 2-Nac, 1- or 2-Npt, 1- or 2-Npr, PhAc, Fpr, or any other aromatic or nonpolar acyl group, R<1> is Tyr, His or Phe(Y), in which Y=H, F, Cl, Br, NO2, NH2, CH3 or OCH3, R<2> is D-Arg, D-Cit, D-Har, D-Lys,D-Tic or D-Orn, R<3> is Asp, D-Asp, Ala, D-Ala or Gly, R<4> is Ala, Abu or Gly, R<5> is Ile, Ala or Gly, R<6> is Phe, Tic, Ala, Pro, Tpi, Nal or Phe(Y), in which Y=H, F, Cl, Br, NO2, NH2, CH3 or OCH3, R<8> is Asn, Gln, Ser, Thr, Val, Leu, Ile, Ala, D-Ala, D-Asn, D-Gln, D-Thr, D-Leu, Abu, D-Abu, Nle, or Aib, R<9> is Ser, R<10> is Tyr or Phe(Y), in which Y=H, F, Cl, Br, NO2, CH3 or OCH3, R<11> is Arg, D-Arg, or Cit, R<12> is Lys, D-Lys, Cit, D-Cit, Orn, D-Orn, Nle or Ala, R<15> is Gly, Ala, Abu or Gln, R<19> is Ala or Abu, R<20> is Arg, D-Arg or Cit, R<21> is Lys, D-Lys, Orn or Cit, R<27> is Met, Nle or Abu, R<28> is Ser, Asn, Asp, Ala or Abu, R<29> is Agm, Arg-NH2, Arg-OH, Cit-NH2, Cit-OH, Har-NH2 or Har-OH, and beta ) X-A<1>-B<2>-A<3>-R<4>-R<5>-R<6>-Thr-A<8>-Ser-R<10>-R<11>-B<12>-Val-Leu-R<15>-A<16>-A<17>-Ser-R<19>-B<20>-B<21>-Leu-Leu-Gln-A<25>-Ile-R<27>-R<28>-B<29>, wherein a lactam bridge is formed between any one of the pairs of positions 1,2; 2,3; 8,12; 16,20; 17-21; 21,25; 25,29 or both 8,12 and 21,25 positions, and X is H, Ac, Aqc, IAc, BrProp, For, Ibu, Nac, 2-Nac, 1- or 2-Npt, 1- or 2-Npr, PhAc, Fpr, or any other aromatic or nonpolar acyl group, A is Glu, D-Glu, Gln, Asp, D-Asp, Asn, Abu, Leu, Tyr, His, Phe(Y), in which Y=H, F, Cl, Br, NO2, NH2, CH3 or OCH3, Ser, Thr, Val, Ile, Ala, D-Ala, D-Asn, D-Gln, D-Thr, D-Leu, Abu, D-Abu, Nle, or Aib, B is Lys, D-Lys, Arg, D-Arg, Orn, D-Orn, or Agm; R<4> is Ala, Abu or Gly, R<5> is Ile, Ala or Gly, R<6> is Phe, Tic, Tpi, Nal or Phe(Y), in which Y=H, F, Cl, Br, NO2, NH2, CH3 or OCH3, R<10> is Tyr or Phe(Y), in which Y=H, F, Cl, Br, NO2, NH2, CH3 or OCH3, R<15> is Gly, Ala, Abu or Gln, R<27> is Met, Nle or Abu, R<28> is Ser, Asn, Asp, Ala or Abu, and pharmaceutically acceptable salts thereof.
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