Title : (3,3-Difluoro-pyrrolidin-1-yl)-[(2S,4S)-(4-(4-pyrimidin-2-yl-piperazin-1-yl)-pyrr olidin-2-yl]-methanone: a potent, selective, orally active dipeptidyl peptidase IV inhibitor - Ammirati_2009_Bioorg.Med.Chem.Lett_19_1991
Title : cis-2,5-dicyanopyrrolidine inhibitors of dipeptidyl peptidase IV: synthesis and in vitro, in vivo, and X-ray crystallographic characterization - Wright_2006_J.Med.Chem_49_3068