Methyl 2-[4-(aminomethyl)-2,5-dioxoimidazolidin-1-yl]acetate

(4E,6Z,8R,9R,10E,12R,13R,14R,16R)-13-hydroxy-8,14,19-trimethoxy-4,10,12,16-tetramethyl-3,20,22-trioxo-2-azabicyclo[16.3.1]docosa-1(21),4,6,10,18-pentaen-9-yl carbamate

rac-(1R,2R,4S)-7-[2-cyclobutyl-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)acetyl]-7-azabicyclo[2.2.1]heptane-2-carboxylic acid

rac-(1R,2R,4S)-7-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3,3-dimethylbutanoyl]-7-azabicyclo[2.2.1]heptane-2-carboxylic acid

(3R)-3-{3-[1-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)cyclohexyl]propanamido}butanoic acid

3-{1-[(3R)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanamido]cyclohexyl}propanoic acid

3-{1-[4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)but-2-ynamido]cyclohexyl}propanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[({4-methyl-2-oxabicyclo[2.1.1]hexan-1-yl}methyl)carbamoyl]propanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[({2-oxabicyclo[2.1.1]hexan-1-yl}methyl)carbamoyl]propanoic acid

3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[(3-methanesulfonylcyclopentyl)carbamoyl]propanoic acid

4-{6-azaspiro[3.6]decan-6-yl}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoic acid