tert-butyl (S)-2-((1-(2-(((benzyloxy)carbonyl)amino)-3-(4-(tert-butoxy)phenyl)propanoyl)piperidin-4-yl)oxy)acetate

(S)-((1-(2-(4-((aminoiminomethyl)benzoyl)amino)-3-(4-hydroxyphenyl)propionyl)piperidin-4-yl)oxy)acetic acid tert-butyl ester

2-((1-((4-(N'-hydroxycarbamimidoyl)benzoyl)-L-tyrosyl)piperidin-4-yl)oxy)acetic acid

(S)-4-cyano-N-(3-(4-hydroxyphenyl)-1-(4-hydroxypiperidin-1-yl)-1-oxopropan-2-yl)benzamide

tert-butyl (S)-2-((1-(3-(4-(tert-butoxy)phenyl)-2-(4-cyanobenzamido)propanoyl)piperidin-4-yl)oxy)acetate