3-Aminobenzo[d]isoxazol-7-ol

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

4-[N-ethyl-2-(ethyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetamido]butanoic acid

2-[(2S)-4-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoyl]-5-oxopyrazolidine-3-carboxylic acid

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

4-{1-[(2S)-4-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoyl]azetidin-3-yl}butanoic acid

(3R)-3-[(2S)-3-(benzyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]hexanoic acid

(2S,3R)-2-[(2S)-3-(benzyl carboxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]-3-methoxybutanoic acid

1-[(2S)-4-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoyl]-2-methylpiperidine-3-carboxylic acid

2-[3,3-Bis(fluoromethyl)-1-hydroxycyclobutyl]-2-hydroxyacetic acid

rac-(3R,4S)-4-[benzyl({[(9H-fluoren-9-yl)methoxy]carbonyl})amino]-1-[(tert-butoxy)carbonyl]piperidine-3-carboxylic acid