(2S)-2-amino-3-[4-(dihydroxyboranyl)-2-fluorophenyl]propanoic acid

(2S)-2-amino-3-[4-(dodecyloxy)phenyl]propanoic acid hydrochloride

(2S)-2-amino-3-[4-(fluorosulfonyl)phenyl]propanoic acid hydrochloride

(2S)-2-amino-3-[4-(methoxycarbonyl)-1,3-oxazol-5-yl]propanoic acid

(2S)-2-amino-3-[5-(trifluoromethyl)-1H-pyrazol-4-yl]propanoic acid hydrochloride

(2S)-2-amino-3-{3-[(fluorosulfonyl)oxy]phenyl}propanoic acid hydrochloride

(2S)-2-amino-3-{4-[(fluorosulfonyl)oxy]phenyl}propanoic acid hydrochloride

(2S)-2-amino-3-{bicyclo[1.1.1]pentan-1-yl}propanoic acid hydrochloride

(2S)-2-amino-3-{[(2S)-2-amino-2-carboxyethyl]disulfanyl}propanoic acid

(2S)-2-amino-3-{[(tert-butoxy)carbonyl]amino}propanoic acid

(2S)-2-amino-3-{[2-(2-methyl-1,3-dioxolan-2-yl)acetyl]oxy}propanoic acid

(2S)-2-amino-4,4,4-trifluoro-3-(trifluoromethyl)butan-1-ol hydrochloride

(2S)-2-amino-4,4,4-trifluorobutan-1-ol

(2S)-2-amino-4,4,4-trifluorobutanoic acid hydrochloride

(2S)-2-amino-4,4-difluorobutanoic acid hydrochloride

(2S)-2-amino-4,4-dimethylhex-5-enoic acid hydrochloride

(2S)-2-amino-4,4-dimethylpentan-1-ol hydrochloride

(2S)-2-amino-4,4-dimethylpentanoic acid hydrochloride

(2S)-2-amino-4-(1,4-oxazepan-4-yl)butanamide dihydrochloride

(2S)-2-amino-4-(1-methyl-1H-pyrazol-4-yl)butanoic acid dihydrochloride

(2S)-2-amino-4-(1H-pyrazol-4-yl)butanoic acid dihydrochloride

(2S)-2-amino-4-(3-methyl-3H-diazirin-3-yl)butanoic acid hydrochloride

(2S)-2-amino-4-(4-methylphenyl)butanoic acid

(2S)-2-amino-4-(aminooxy)butanoic acid

(2S)-2-amino-4-(aminooxy)butanoic acid dihydrochloride

(2S)-2-amino-4-(benzyloxy)-4-oxobutanoic acid

(2S)-2-amino-4-(dimethylamino)butanoic acid

(2S)-2-amino-4-(dimethylamino)butanoic acid dihydrochloride

(2S)-2-amino-4-(dimethylcarbamoyl)butanoic acid hydrochloride

(2S)-2-amino-4-(ethylcarbamoyl)butanoic acid

(2S)-2-amino-4-(hydroxyphosphonoyl)butanoic acid hydrochloride

(2S)-2-amino-4-(methylsulfanyl)butan-1-ol

(2S)-2-amino-4-(methylsulfanyl)butanamide

(2S)-2-amino-4-(methylsulfanyl)butanamide hydrochloride

(2S)-2-amino-4-(methylsulfanyl)butanoic acid

(2S)-2-amino-4-(phosphonooxy)butanoic acid; trifluoroacetic acid

(2S)-2-amino-4-(prop-2-en-1-ylsulfanyl)butanoic acid hydrochloride

(2S)-2-amino-4-(tert-butoxy)-4-oxobutanoic acid

(2S)-2-amino-4-(trifluoromethoxy)butanoic acid hydrochloride

(2S)-2-amino-4-bromopent-4-enoic acid hydrochloride

(2S)-2-amino-4-carbamoyl-2-methylbutanoic acid

(2S)-2-amino-4-carbamoylbutanoic acid

(2S)-2-amino-4-chloropent-4-enoic acid

(2S)-2-amino-4-chloropent-4-enoic acid hydrochloride

(2S)-2-amino-4-cyclohexylbutanoic acid hydrochloride