1 DI3 Ac-(D)phe-pro-boro-N-butyl-amidino-glycine-oh 1.000 2 DI4 Ac-(D)phe-pro-borohomolys-oh 0.970 3 DI2 Ac-(D)phe-pro-borolys-oh 0.882 4 DI5 Ac-(D)phe-pro-borohomoornithine-oh 0.853 5 DP7 Ac-(D)phe-pro-boroarg-oh 0.784 6 T29 Tri166 (bifunctional boronate inhibitor) 0.763 7 T16 Borolog2 0.744