The invention relates to GLP-1 receptor agonist compounds with a modified N-terminus. The compounds are of the formula Chem. 1: Y—Z—P, wherein P represents a fragment of a GLP-1 receptor agonist peptide lacking the two N-terminal amino acid residues; and Y—Z represents novel His-Ala mimetics. Examples of GLP-1 receptor agonist compounds are derived from human GLP-1 (7-37), exendin-4(1-39), or GLP-1 A (1-37). The invention also relates to derivatives of these compounds, in particular compounds with one or more albumin binding side chains capable of protracting the duration of action in vivo of these compounds. The peptides and derivatives of the invention have a good potency, a protracted pharmacokinetic profile, are stable against degradation by gastro intestinal enzymes, and/or have a high oral bioavailability. These properties are of importance in the development of GLP-1 receptor agonist compounds for subcutaneous, intravenous, and/or in particular oral administration. The invention also relates to intermediate products for use in the preparation of the GLP-1 receptor agonist compounds of the invention.
本发明涉及具有改性N-末端的GLP-1受体激动剂化合物。该化合物的
化学式为Chem.1:Y-Z-P,其中P表示GLP-1受体激动肽的一个片段,缺少两个N-末端
氨基酸残基;而Y-Z表示新型的His-Ala类似物。GLP-1受体激动剂化合物的例子源自人类GLP-1(7-37)、exendin-4(1-39)或GLP-1A(1-37)。本发明还涉及这些化合物的衍
生物,特别是具有一个或多个能够在体内延长作用持续时间的白蛋白结合侧链的化合物。本发明的肽和衍
生物具有良好的效力、持久的药代动力学特性、对胃肠道酶的降解稳定性和/或高口服
生物利用度。这些特性对于开发用于皮下、静脉内和/或口服给药的GLP-1受体激动剂化合物非常重要。本发明还涉及用于制备本发明的GLP-1受体激动剂化合物的中间产物。