Title : 7-But-2-ynyl-9-(6-methoxy-pyridin-3-yl)-6-piperazin-1-yl-7,9-dihydro-purin-8-one is a novel competitive and selective inhibitor of dipeptidyl peptidase IV with an antihyperglycemic activity - Yamazaki_2006_J.Pharmacol.Exp.Ther_319_1253
Title : E3024, 3-but-2-ynyl-5-methyl-2-piperazin-1-yl-3,5-dihydro-4H-imidazo[4,5-d]pyridazin-4-o ne tosylate, is a novel, selective and competitive dipeptidyl peptidase-IV inhibitor - Yasuda_2006_Eur.J.Pharmacol_548_181