2IIV:
reference: (3R)-4-[(3R)-3-Amino-4-(2,4,5-trifluorophenyl)butanoyl]-3-(2,2,2-trifluoro ethyl)-1,4-diazepan-2-one, a selective dipeptidyl peptidase IV inhibitor for the treatment of type 2 diabetes., Biftu T, Feng D, Qian X, Liang GB, Kieczykowski G, Eiermann G, He H, Leiting B, Lyons K, Petrov A, Sinha-Roy R, Zhang B, Scapin G, Patel S, Gao YD, Singh S, Wu J, Zhang X, Thornberry NA, Weber AE, Bioorg Med Chem Lett. 2006 Oct 5;. PMID: 17055272

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