Eleven Amino Acid Glucagon-like Peptide-1 Receptor Agonists with Antidiabetic Activity
摘要:
Glucagon-like peptide 1 (GLP-1) is a 30 or 31 amino acid peptide hormone that contributes to the physiological regulation of glucose homeostasis and food intake. Herein, we report the discovery of a novel class of 11 amino acid GLP-1 receptor agonists. These peptides consist of a structurally optimized 9-mer, which is closely related to the N-terminal 9 amino acids of GLP-1, linked to a substituted C-terminal biphenylalanine (BIP) dipeptide. SAR studies resulted in 11-mer GLP-1R agonists with similar in vitro potency to the native 30-mer. Peptides 21 and 22 acutely reduced plasma glucose excursions and increased plasma insulin concentrations in a Mouse model of diabetes. These peptides also showed sustained exposures over several hours in mouse and dog models. The described 11-mer GLP-1 receptor agonists represent a new tool in further understanding GLP-1 receptor pharmacology that may lead to novel antidiabetic agents.
Suzuki-Miyaura Diversification of Amino Acids and Dipeptides in Aqueous Media
作者:Tom Willemse、Karolien Van Imp、Rebecca J. M. Goss、Herman W. T. Van Vlijmen、Wim Schepens、Bert U. W. Maes、Steven Ballet
DOI:10.1002/cctc.201500190
日期:2015.7.13
modification of unprotected and Boc‐protected aromatic amino acids and dipeptides in aqueous media, enabling heteroarylation and vinylation. We systematically investigate the impact of the peptide backbone and adjacent amino acid residues upon the reaction. Our studies reveal that although asparagine and histidine hinder the reaction, by utilising dppf, a ferrocene‐based bidentate phosphine ligand, cross coupling