| 摘要 |
PURPOSE:Polypeptides, their acid salts and their complexes of formula I X1 is alpha-aminoisobutyric acid, beta-alanine etc.; X2 is L-methionine, etc.; X3 is Lglutamic acid or L-glutamine residue; n is 1-4; Y is group of formula II [R1, R2 are H, lower alkyl, or combine together to form heterocycle which may be substituted], such as Aib-Tyr-Ser-Met-Glu-His-Phe-Arg-Trp-Gly-Pro-Val-GlyLys-Lys-Lys-Lys-N(C H3)2. |
