C1CN[C@@H]1C(=O)N2[C@@H](C[C@H]3[C@@H]2C3)C#N 315465 Ki > 10000 nM 20091 8 P28843 Dipeptidyl peptidase IV C1C[C@@H](NC1)C(=O)N2[C@@H](C[C@H]3[C@@H]2C3)C#N 315162 Ki > 10000 nM 20091 8 P28843 Dipeptidyl peptidase IV C1CCN[C@@H](C1)C(=O)N2[C@@H](C[C@H]3[C@@H]2C3)C#N 315460 Ki > 10000 nM 20091 8 P28843 Dipeptidyl peptidase IV C1[C@@H]2C[C@@H]2N([C@@H]1C#N)C(=O)[C@@H]3C[C@@H]4C[C@@H]4N3 315207 Ki > 10000 nM 20091 8 P28843 Dipeptidyl peptidase IV