2QTB:
reference: 4-arylcyclohexylalanine analogs as potent, selective, and orally active inhibitors of dipeptidyl peptidase IV., Kaelin DE, Smenton AL, Eiermann GJ, He H, Leiting B, Lyons KA, Patel RA, Patel SB, Petrov A, Scapin G, Wu JK, Thornberry NA, Weber AE, Duffy JL, Bioorg Med Chem Lett. 2007 Nov 1;17(21):5806-11. Epub 2007 Aug 26. PMID: 17851076

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