1 186 [1-(1-methyl-4,5-dioxo-pent-2-enylcarbamoyl)-2-phenyl-ethyl]-carbamic acid benzyl ester 1.000 2 WR1 Nalpha-[(benzyloxy)carbonyl]-N-[(1r)-4-hydroxy-1-methyl-2-oxobutyl]-L-phenylalaninamide 0.903 3 0PC Nalpha-[(benzyloxy)carbonyl]-N-[(1s)-3-chloro-1-methyl-2-oxopropyl]-L-phenylalaninamide 0.812 4 ZYA Benzoyl-tyrosine-alanine-fluoro-methyl ketone 0.788 5 XIB N-[(benzyloxy)carbonyl]-L-tyrosyl-D-alanine 0.758 6 G75 Ethyl (4r)-4-({N-[(benzyloxy)carbonyl]-L-phenylalanyl}amino)-5-[(3s)-2-oxopyrrolidin-3-yl]pentanoate 0.718