1-(But-3-yn-1-yl)-3-(thiophen-2-yl)urea

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

2-({5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-1,2-oxazol-3-yl}formamido)pent-4-enoic acid

2-[2-ethyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]-5-methylhexanoic acid

2-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanamido]-5-methylhexanoic acid

2-{[2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-1,3-thiazol-4-yl]formamido}-5-methylhexanoic acid

5-[4-benzyl-3-(propan-2-yl)piperazin-1-yl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-oxopentanoic acid

2-{1-[(2R,3S)-3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoyl]azetidin-3-yl}acetic acid

5-Amino-6-methyl-1-[(prop-2-en-1-yloxy)methyl]-1,2-dihydropyridin-2-one

2-{[(2R,3S)-3-(benzyloxy)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]methyl}pyridine-4-carboxylic acid

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