| 摘要 |
FIELD: organic chemistry, amino acids. ^ SUBSTANCE: invention proposes agonists of somatostatin of the formula (I): X-A1-cyclo-(D-Cys-A3-A4-Lys-A6-A7)-A8-Y or its pharmaceutically acceptable salt wherein X represents hydrogen atom (H); A1 represents L-Cpa, L-Phe, L-Trp or L-Nal; A3 represents L-3-Pal or L-4-Pal; A4 represents D-Trp; A6 represents -NH-(CHR1)n-CO- wherein n = 2, 3 or 4; A7 represents L- or D-Cys; A8 represents D- or L-isomer of amino acid taken among the group consisting of Nal, Phe, Cpa and Trp; Y represents NH2; R1 represents hydrogen atom (H), and Cys in A3 is bound by disulfide bong in A wherein this disulfide bond is formed by thiol groups of each Cys residue. ^ EFFECT: valuable biological properties of compounds. ^ 9 cl, 2 ex
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