3NOX:
reference: Discovery of 6-(Aminomethyl)-5-(2,4-dichlorophenyl)-7-methylimidazo[1,2-a]pyrimidine-2- carboxamides as potent, selective dipeptidyl peptidase-4 (DPP4) inhibitors., 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, J Med Chem. 2010 Aug 12;53(15):5620-8. PMID: 20684603

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