1-[2-(1-ethyl-1H-pyrazol-3-yl)ethyl]cyclopropan-1-amine

7-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanamido]heptanoic acid

4-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]-3-methoxybutanoic acid

(2S,3R)-2-{[(2RS,3RS)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-2-yl]formamido}-3-hydroxybutanoic acid

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

3-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl}formamido)pentanoic acid

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

2-({[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-4-yl]formamido}oxy)-3-methoxypropanoic acid

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

(1RS,3RS,5RS)-3-[(2S)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]bicyclo[3.1.0]hexane-1-carboxylic acid

(1RS&,2SR&)-2-[(1RS,3RS,5RS)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)bicyclo[3.1.0]hexane-1-amido]cyclopentane-1-carboxylic acid