5-(4-Methoxypyridin-3-yl)-1,2,3,6-tetrahydropyridin-3-amine

(2S)-3-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanamido]-2-hydroxypropanoic acid

(2S)-2-{[3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)phenyl]formamido}propanoic acid

2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]furan-2-yl}formamido)-3-hydroxy-2-methylpropanoic acid

(2S)-3-(tert-butoxy)-2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-enamido]propanoic acid

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

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

4-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hex-5-enamido]-4-methylpentanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[2-(4-hydroxypiperidin-1-yl)ethyl]carbamoyl}propanoic acid

rac-(2R,3R)-1-[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,2-oxazole-3-carbonyl]-2-methylpiperidine-3-carboxylic acid

2-{2-[1-benzyl-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)piperidin-4-yl]acetamido}-2-cyclopropylacetic acid