Discovery of a Novel Glucagon Receptor Antagonist <i>N</i>-[(4-{(1<i>S</i>)-1-[3-(3, 5-Dichlorophenyl)-5-(6-methoxynaphthalen-2-yl)-1<i>H</i>-pyrazol-1-yl]ethyl}phenyl)carbonyl]-β-alanine (MK-0893) for the Treatment of Type II Diabetes
作者:Yusheng Xiong、Jian Guo、Mari R. Candelore、Rui Liang、Corey Miller、Qing Dallas-Yang、Guoqiang Jiang、Peggy E. McCann、Sajjad A. Qureshi、Xinchun Tong、Shiyao Sherrie Xu、Jackie Shang、Stella H. Vincent、Laurie M. Tota、Michael J. Wright、Xiaodong Yang、Bei B. Zhang、James R. Tata、Emma R. Parmee
DOI:10.1021/jm300579z
日期:2012.7.12
A potent, selective glucagon receptor antagonist 9m, N-[(4-(1S)-1-[3-(3,5-dichlorophenyl) -5-(6-methoxynaphthalen-2-yl)-1H-pyrazol-1-yl]ethyl}phenyl)-carbonyl]-beta-alanine, was discovered by optimization of a previously identified lead. Compound 9m is a reversible and competitive antagonist with high binding affinity (IC50 of 6.6 nM) and functional cAMP activity (IC50 of 15.7 nM). It is selective for glucagon receptor relative to other family B GPCRs, showing IC50 values of 1020 nM for GIPR, 9200 nM for PAC1, and >10000 nM for GLP-1R, VPAC1, and VPAC2. Compound 9m blunted glucagon-induced glucose elevation in hGCGR mice and rhesus monkeys. It also lowered ambient glucose levels in both acute and chronic mouse models: in hGCGR ob/ob mice it reduced glucose (AUC 0-6 h) by 32% and 39% at 3 and 10 mpk single doses, respectively. In hGCGR mice on a high fat diet, compound 9m at 3, and 10 mpk po in feed lowered blood glucose levels by 89% and 94% at day 10, respectively, relative to the difference between the vehicle control and lean hGCGR mice. On the basis of its favorable biological and DMPK properties, compound 9m (MK-0893) was selected for further preclinical and clinical evaluations.