Ethyl 4-hydroxy-6,7-dihydro-1,2-benzoxazole-3-carboxylate

(3S)-3-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methoxybutanamido]-4-methylpentanoic acid

(3S)-3-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanamido]-4-methylpentanoic acid

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

2-[(3S)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]-3,3,3-trifluoro-2-methylpropanoic acid

4-(2-ethynylpyrrolidin-1-yl)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoic acid

5-(2-ethynylpyrrolidin-1-yl)-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-oxopentanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-{1-oxa-7-azaspiro[4.4]nonan-7-yl}-4-oxobutanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-({5-methoxyspiro[2.3]hexan-1-yl}carbamoyl)propanoic acid

1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoyl]-1H,2H,3H-pyrazolo[1,5-a]imidazole-7-carboxylic acid

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