(3S)-4-(4-bromophenyl)-3-{[(tert-butoxy)carbonyl]amino}butanoic acid

(3S)-4-(benzyloxy)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

(3S)-4-(benzyloxy)-3-{[(tert-butoxy)carbonyl]amino}-4-oxobutanoic acid

(3S)-4-(benzyloxy)-3-{[(tert-butoxy)carbonyl]amino}butanoic acid

(3S)-4-(tert-butoxy)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-4-oxobutanoic acid

(3S)-4-(tert-butoxy)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

(3S)-4-(tert-butoxy)-3-{[(tert-butoxy)carbonyl]amino}-4-oxobutanoic acid

(3S)-4-(tert-butoxy)-3-{[(tert-butoxy)carbonyl]amino}butanoic acid

(3S)-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-hydroxybutanoic acid

(3S)-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-methylbutanoic acid

(3S)-4-amino-3-(4-chlorophenyl)butanoic acid hydrochloride

(3S)-4-amino-3-hydroxybutanenitrile hydrochloride

(3S)-4-amino-3-hydroxybutanenitrile; methanesulfonic acid

(3S)-4-amino-3-hydroxybutanoic acid

(3S)-4-amino-3-methylbutanoic acid hydrochloride

(3S)-4-amino-3-phenylbutanoic acid hydrochloride

(3S)-4-aminobutane-1,3-diol

(3S)-4-azido-3-hydroxybutanenitrile

(3S)-4-chloro-3-hydroxybutanenitrile

(3S)-4-cyclohexyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

(3S)-4-cyclopropyl-3-hydroxybutanoic acid

(3S)-4-fluoro-3-hydroxybutanoic acid

(3S)-4-methylpent-1-yn-3-amine hydrochloride

(3S)-4-methylpent-1-yn-3-ol

(3S)-4-[(tert-butoxy)carbonyl]-1,4-oxazepane-3-carboxylic acid

(3S)-4-[(tert-butoxy)carbonyl]-2,2-dimethylthiomorpholine-3-carboxylic acid

(3S)-4-[(tert-butoxy)carbonyl]morpholine-3-carboxylic acid

(3S)-4-{[(tert-butoxy)carbonyl]amino}-3-methylbutanoic acid

(3S)-5-amino-3-hydroxypentanoic acid hydrochloride

(3S)-5-bromo-2,3-dihydro-1-benzofuran-3-amine hydrochloride

(3S)-5-chloro-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid hydrochloride

(3S)-5-cyclohexyl-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pentanoic acid

(3S)-5-methyl-3-(methylamino)hexanoic acid hydrochloride

(3S)-5-methyl-3-(pentanamidomethyl)hexanoic acid

(3S)-5-methyl-3-({[(2S)-pyrrolidin-2-yl]formamido}methyl)hexanoic acid

(3S)-5-methyl-3-({[(3RS,4RS)-4-methylpyrrolidin-3-yl]formamido}methyl)hexanoic acid

(3S)-5-methyl-3-{[(piperidin-3-yl)formamido]methyl}hexanoic acid hydrochloride

(3S)-5-methyl-3-{[(piperidin-4-yl)formamido]methyl}hexanoic acid hydrochloride

(3S)-5-methyl-3-{[2-(pyrrolidin-2-yl)acetamido]methyl}hexanoic acid hydrochloride

(3S)-5-methylhexane-1,3-diamine dihydrochloride

(3S)-5-oxo-1-[(1S)-1-phenylethyl]pyrrolidine-3-carboxylic acid

(3S)-5-oxopyrrolidine-3-carboxylic acid

(3S)-6,6-dimethyl-5-oxothiomorpholine-3-carboxylic acid

(3S)-6-(tert-butoxy)-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)-6-oxohexanoic acid

(3S)-6-bromo-2,3-dihydro-1-benzofuran-3-amine hydrochloride