3-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoyl]-3-azabicyclo[3.2.1]octane-8-carboxylic acid

(2R)-1-[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)oxolane-2-carbonyl]-2-methylpyrrolidine-2-carboxylic acid

2-[(2S)-N-tert-butyl-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]acetic acid

2-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]benzoic acid

Tert-butyl 3-(2-diazoacetyl)azetidine-1-carboxylate

5-[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]pyridine-3-carboxylic acid

(1RS,2SR)-2-{[(2S)-3-(dimethylamino)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]methyl}cyclopentane-1-carboxylic acid

3-Amino-1-(5-methoxypyridin-3-yl)cyclobutane-1-carboxylic acid

4-Methyl-3-(2-methylpyridin-3-yl)cyclohexan-1-amine

6-[(tert-butoxy)carbonyl]-1H,4H,5H,6H,7H-pyrrolo[2,3-c]pyridine-3-carboxylic acid

(2S)-3-(dimethylamino)-2-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2-oxazol-3-yl]formamido}propanoic acid