Title : Discovery of 6-(Aminomethyl)-5-(2,4-dichlorophenyl)-7-methylimidazo[1,2-a]pyrimidine-2-carboxa mides as Potent, Selective Dipeptidyl Peptidase-4 (DPP4) Inhibitors - Meng_2010_J.Med.Chem_53_5620 |
Author(s) : Meng W , Brigance RP , Chao HJ , Fura A , Harrity T , Marcinkeviciene J , O'Connor SP , Tamura JK , Xie D , Zhang Y , Klei HE , Kish K , Weigelt CA , Turdi H , Wang A , Zahler R , Kirby MS , Hamann LG |
Ref : Journal of Medicinal Chemistry , 53 :5620 , 2010 |
Abstract :
Continued structure-activity relationship (SAR) exploration within our previously disclosed azolopyrimidine containing dipeptidyl peptidase-4 (DPP4) inhibitors led us to focus on an imidazolopyrimidine series in particular. Further study revealed that by replacing the aryl substitution on the imidazole ring with a more polar carboxylic ester or amide, these compounds displayed not only increased DPP4 binding activity but also significantly reduced human ether-a-go-go related gene (hERG) and sodium channel inhibitory activities. Additional incremental adjustment of polarity led to permeable molecules which exhibited favorable pharmacokinetic (PK) profiles in preclinical animal species. The active site binding mode of these compounds was determined by X-ray crystallography as exemplified by amide 24c. A subsequent lead molecule from this series, (+)-6-(aminomethyl)-5-(2,4-dichlorophenyl)-N-(1-ethyl-1H-pyrazol-5-yl)-7-methylimidazo[1,2-a]pyrimidine-2-carboxamide (24s), emerged as a potent, selective DPP4 inhibitor that displayed excellent PK profiles and in vivo efficacy in ob/ob mice. |
PubMedSearch : Meng_2010_J.Med.Chem_53_5620 |
PubMedID: 20684603 |
Gene_locus related to this paper: human-DPP4 |
Inhibitor | CHEMBL1214943 CHEMBL1910111 CHEMBL1215376 |
Gene_locus | CHEMBL1214943 CHEMBL1910111 CHEMBL1215376 human-DPP4 |
Structure | CHEMBL1214943 CHEMBL1910111 CHEMBL1215376 human-DPP4 3Q0T 3NOX |
Meng W, Brigance RP, Chao HJ, Fura A, Harrity T, Marcinkeviciene J, O'Connor SP, Tamura JK, Xie D, Zhang Y, Klei HE, Kish K, Weigelt CA, Turdi H, Wang A, Zahler R, Kirby MS, Hamann LG (2010)
Discovery of 6-(Aminomethyl)-5-(2,4-dichlorophenyl)-7-methylimidazo[1,2-a]pyrimidine-2-carboxa mides as Potent, Selective Dipeptidyl Peptidase-4 (DPP4) Inhibitors
Journal of Medicinal Chemistry
53 :5620
Meng W, Brigance RP, Chao HJ, Fura A, Harrity T, Marcinkeviciene J, O'Connor SP, Tamura JK, Xie D, Zhang Y, Klei HE, Kish K, Weigelt CA, Turdi H, Wang A, Zahler R, Kirby MS, Hamann LG (2010)
Journal of Medicinal Chemistry
53 :5620