N-(3-acetylphenyl)-2-[(4-amino-6-benzyl-5-oxo-4,5-dihydro-1,2,4-triazin-3-yl)sulfanyl]acetamide

2-cyclobutyl-2-[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-2-methylpentanamido]acetic acid

(2R,3S)-3-(benzyloxy)-2-{[5-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohex-3-en-1-yl]formamido}butanoic acid

5-[(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanamido]cyclohex-3-ene-1-carboxylic acid

rac-(1R,5S)-5-{2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetamido}cyclohex-3-ene-1-carboxylic acid

(2R)-2-{[(2RS,3RS)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-2-yl]formamido}-4-methylpentanoic acid

rac-2-[(2-{[(2R,3R)-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-2-yl]formamido}ethyl)sulfanyl]acetic acid

rac-(2R,3R)-3-({[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclopentyl]formamido}methyl)oxolane-2-carboxylic acid

rac-(2R,3R)-3-({2-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclobutyl]acetamido}methyl)oxolane-2-carboxylic acid

2-(2-{[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanamido]methyl}-1,3-thiazol-4-yl)acetic acid

(4R)-3-(2-{2-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,3-thiazol-4-yl}acetyl)-1,3-thiazolidine-4-carboxylic acid