| abstract |
The compounds of the formula (I) <EMI FILE = "97071692_1" ID = "1" MFI = JPEG> Characterized because: X1 is hydrogen or acyl; X2 is G or sarcosine (Sar) X3 is R, A, norleucine (Nle ) or N-acetyl-lysine (Ac-Lys); X4 is Q or E; X5 is W, L-1-naphthylalanine (1-Nal) or F; X6 is A, 5-aminopentanoic acid (Ava) or acid 2 -aminobutyric acid (Abu); X7 is A, diphenylalanine (Diphe) or X7 is absent; X8 is R, p-aminophenylalanine (p-amino-Phe), N-acetyl-lysine (Ac-Lys) or X8 is absent; X9 and X9, are the same or different and are A, ßA, n-methylalanine (n-Me-Ala), sarcosine (Sar), or X9 or X9, is absent; X10 and X10, are the same or different and are ßA , or X10 or X10, is absent; and pharmaceutically acceptable derivatives thereof; with the proviso that the compound <EMI FILE = "97071692_2" ID = "2" MFI = JPEG> is excluded. |