2-amino-3-(4-bromo-1H-pyrazol-1-yl)propanoic acid hydrochloride

3-[benzyl(methyl)amino]-2-{[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]formamido}propanoic acid

3-[benzyl(methyl)amino]-2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methyl-1,3-thiazol-5-yl]formamido}propanoic acid

3-[benzyl(methyl)amino]-2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]formamido}propanoic acid

3-[benzyl(methyl)amino]-2-{2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]acetamido}propanoic acid

3-[benzyl(methyl)amino]-2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-fluorophenyl]formamido}propanoic acid

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

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

(1rs,3rs)-3-[(2R,3S)-3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]cyclobutane-1-carboxylic acid

3-{[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]methyl}pentanoic acid

4-[3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-N-methylbutanamido]oxolane-3-carboxylic acid