4-{[(3aR,7aS)-1-[(tert-butoxy)carbonyl]-octahydro-1H-indol-5-yl]({[(9H-fluoren-9-yl)methoxy]carbonyl})amino}butanoic acid

rac-2-{1-[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl]-N-methylformamido}butanoic acid

1-[(Trifluoroacetamido)methyl]-2-oxabicyclo[2.2.2]octane-4-carboxylic acid

rac-2-[(1R,5R,6S)-6-methoxy-2-(2,2,2-trifluoroacetyl)-2-azabicyclo[3.2.0]heptan-6-yl]acetic acid

4-(2,2,2-Trifluoroacetyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid

8-(2,2,2-Trifluoroacetamido)-5-oxaspiro[3.5]nonane-2-carboxylic acid

rac-(1R,3S)-3-{[(prop-2-en-1-yloxy)carbonyl]amino}-1-(trifluoromethyl)cyclopentane-1-carboxylic acid

rac-2-{1-[(3R,5R)-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]oxolan-3-yl]-N-methylformamido}-2-methylpropanoic acid

1-[(Prop-2-en-1-yloxy)carbonyl]-5-(trifluoromethyl)piperidine-3-carboxylic acid

tert-butyl N-(2-cyano-3-fluoro-6-nitrophenyl)carbamate

2-Acetamido-3-[4-(trifluoromethyl)thiophen-2-yl]propanoic acid