The sorting - and deeper the polarised secretion of gastric and method of preparation and pharmaceutical compositions containing them,

摘要

The invention relates to the peptides of the formula: IMAGE (I) IMAGE in which: R1 represents hydrogen or a protecting group for the amine group, such as t-butoxycarbonyl, benzyloxycarbonyl or lower alkanoyl groups; X represents beta-alanine glycine or a direct bond between R1 and the amine group; and R2 represents a group chosen from: IMAGE corresponding to the side chains of the natural amino acid leucine, methionine and norleucine. These peptides inhibit gastric secretion.