1-(4-Ethoxyphenyl)prop-2-en-1-one

(3R)-3-{[4-bromo-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}pentanoic acid

3-{2-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyridin-2-yl]acetamido}cyclobutane-1-carboxylic acid

3-{3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)ethoxy]propanamido}cyclobutane-1-carboxylic acid

3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazole-4-amido]cyclobutane-1-carboxylic acid

2-{N-ethyl-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}-2-methylpropanoic acid

(2S)-3,3-dimethyl-2-{[(1rs,3rs)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}butanoic acid

2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxy-4-methyl-N-(prop-2-en-1-yl)pentanamido]acetic acid

1-benzyl-3-[(2S)-3-cyclopropyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]pyrrolidine-3-carboxylic acid

1-benzyl-3-[3-cyclopropyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]pyrrolidine-3-carboxylic acid

1-benzyl-3-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentaneamido]pyrrolidine-3-carboxylic acid