Various beta-amino amides containing triazolopiperazine heterocycles have been prepared and evaluated as potent, selective, orally active dipeptidyl peptidase IV (DPP-4) inhibitors. These compounds display excellent oral bioavailability and good overall pharmacokinetic profiles in preclinical species. Moreover, in vivo efficacy in an oral glucose tolerance test in lean mice is demonstrated.
        
Representative scheme of DPP4N_Peptidase_S9 structure and an image from PDBsum server
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Databases
PDB-Sum
2QOE Previously Class, Architecture, Topology and Homologous superfamily - PDB-Sum server
FSSP
2QOEFold classification based on Structure-Structure alignment of Proteins - FSSP server