(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-[4-(trifluoromethyl)phenyl]propanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-{[(7-hydroxy-2-oxo-2H-chromen-4-yl)methyl]sulfanyl}propanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-(methylsulfanyl)butanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-methylpentanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-phenoxybutanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-phenylbutanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-[(triphenylmethyl)carbamoyl]butanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5,5-difluoropentanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-methoxy-5-oxopentanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-5-{N'-[(2,2,4,6,7-pentamethyl-2,3-dihydro-1-benzofuran-5-yl)sulfonyl]carbamimidamido}pentanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-6,6,6-trifluorohexanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hex-5-ynoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)hexanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pent-4-enoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoic acid

(2R)-2-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)propanoic acid

(2R)-2-({[(tert-butoxy)carbonyl]amino}methyl)butanoic acid

(2R)-2-({[(tert-butoxy)carbonyl]amino}oxy)propanoic acid

(2R)-2-({[3,5-bis(trifluoromethyl)phenyl]carbamothioyl}amino)-N-(2,4-difluorophenyl)-2-phenylacetamide

(2R)-2-acetamido-3,3-dimethylbutanoic acid

(2R)-2-acetamido-3-methylbutanoic acid

(2R)-2-acetamido-3-sulfanylpropanoic acid

(2R)-2-acetamido-3-{[(prop-2-en-1-yl)carbamothioyl]sulfanyl}propanoic acid

(2R)-2-acetamido-4-(methylsulfanyl)butanoic acid

(2R)-2-acetamido-4-methylpentanoic acid

(2R)-2-acetamidopropanoic acid

(2R)-2-amino-1-(1,2,3,4-tetrahydroisoquinolin-2-yl)propan-1-one

(2R)-2-amino-1-(1,2,3,4-tetrahydroisoquinolin-2-yl)propan-1-one hydrochloride

(2R)-2-amino-1-(2,3-dihydro-1H-isoindol-2-yl)propan-1-one hydrochloride

(2R)-2-amino-1-(morpholin-4-yl)propan-1-one hydrochloride

(2R)-2-amino-1-(piperidin-1-yl)propan-1-one hydrochloride

(2R)-2-amino-1-(pyrrolidin-1-yl)butan-1-one hydrochloride

(2R)-2-amino-1-(pyrrolidin-1-yl)propan-1-one hydrochloride

(2R)-2-amino-1-(thiomorpholin-4-yl)propan-1-one hydrochloride

(2R)-2-amino-2-(1-methyl-1H-pyrazol-4-yl)ethan-1-ol dihydrochloride

(2R)-2-amino-2-(1H-pyrazol-3-yl)ethan-1-ol dihydrochloride

(2R)-2-amino-2-(2-bromo-4-chlorophenyl)ethan-1-ol hydrochloride

(2R)-2-amino-2-(2-chlorophenyl)acetic acid

(2R)-2-amino-2-(2-fluorophenyl)ethan-1-ol hydrochloride

(2R)-2-amino-2-(2-methyl-5-nitrophenyl)ethan-1-ol

(2R)-2-amino-2-(3-bromo-2-methylphenyl)ethan-1-ol hydrochloride

(2R)-2-amino-2-(3-bromo-4-fluorophenyl)ethan-1-ol hydrochloride

(2R)-2-amino-2-(3-bromo-5-chlorophenyl)ethan-1-ol hydrochloride

(2R)-2-amino-2-(3-bromophenyl)ethan-1-ol hydrochloride