Аннотация:Seven analogues of des-Phe-NH2 C-terminal tetrapeptide of gastrin: Boc-Gly-Trp-Leu-Asp-NH2, Boc-X-Trp-Leu-Asp-NH2, Boc-Trp-X-Asp-NH2 (X-gamma-Abu, delta-Ape, epsilon-Ahx) were synthesized by employing peptide formation reactions in the solution. The resultant compounds were tested for effects of canine gastric secretion.