(2R)-2-[(tert-butyldimethylsilyl)oxy]propanal

(2R)-2-[(thiophen-2-yl)methyl]pyrrolidine

(2R)-2-[(trifluoromethoxy)methyl]pyrrolidine hydrochloride

(2R)-2-[(triphenylmethoxy)methyl]oxirane

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

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

(2R)-2-[2-(1H-1,2,3,4-tetrazol-1-yl)acetamido]propanoic acid

(2R)-2-[2-(benzyloxy)ethyl]oxirane

(2R)-2-[2-(cyclohex-1-en-1-yl)acetamido]propanoic acid

(2R)-2-[2-(cyclopent-2-en-1-yl)acetamido]propanoic acid

(2R)-2-[2-(dimethylamino)ethoxy]propanoic acid hydrochloride

(2R)-2-[2-(methylsulfanyl)phenyl]pyrrolidine hydrochloride

(2R)-2-[2-(phenylsulfanyl)acetamido]propanoic acid

(2R)-2-[3-(1H-pyrazol-4-yl)-1,2,4-oxadiazol-5-yl]propan-1-amine dihydrochloride

(2R)-2-[3-(difluoromethoxy)phenyl]-2-hydroxyacetic acid

(2R)-2-[3-(trifluoromethyl)phenyl]propan-1-amine hydrochloride

(2R)-2-[4-(difluoromethoxy)phenyl]-2-hydroxyacetic acid

(2R)-2-[4-(trifluoromethyl)phenyl]oxirane

(2R)-2-[4-(trifluoromethyl)phenyl]propanoic acid

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

(2R)-2-{5H,6H,7H,8H-[1,2,4]triazolo[4,3-a]pyridin-3-yl}pyrrolidine dihydrochloride

(2R)-2-{5H,6H,8H-[1,2,4]triazolo[3,4-c][1,4]oxazin-3-yl}pyrrolidine dihydrochloride

(2R)-2-{[(2-methyl-1,3-thiazol-4-yl)methyl]amino}propanoic acid dihydrochloride

(2R)-2-{[(2R)-2-aminopropanoyl]oxy}propanoic acid hydrochloride

(2R)-2-{[(2S)-5-oxopyrrolidin-2-yl]formamido}propanoic acid

(2R)-2-{[(benzyloxy)carbonyl]amino}-3-cyclopropylpropanoic acid

(2R)-2-{[(benzyloxy)carbonyl]amino}-3-fluoropropanoic acid

(2R)-2-{[(benzyloxy)carbonyl]amino}-5-(tert-butoxy)-5-oxopentanoic acid

(2R)-2-{[(benzyloxy)carbonyl]amino}butanedioic acid

(2R)-2-{[(benzyloxy)carbonyl]amino}pentanedioic acid

(2R)-2-{[(benzyloxy)carbonyl]amino}propanoic acid

(2R)-2-{[(pyridin-2-yl)methyl]amino}propanoic acid dihydrochloride

(2R)-2-{[(tert-butoxy)carbonyl](ethyl)amino}-3-phenylpropanoic acid

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

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

(2R)-2-{[(tert-butoxy)carbonyl]amino}-2-(2,3-dihydro-1H-inden-1-yl)acetic acid

(2R)-2-{[(tert-butoxy)carbonyl]amino}-2-(3-fluorophenyl)acetic acid

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

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

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

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

(2R)-2-{[(tert-butoxy)carbonyl]amino}-2-[1-(methoxycarbonyl)cyclopropyl]acetic acid

(2R)-2-{[(tert-butoxy)carbonyl]amino}-2-[3-(methoxycarbonyl)bicyclo[1.1.1]pentan-1-yl]acetic acid

(2R)-2-{[(tert-butoxy)carbonyl]amino}-2-[3-(trifluoromethyl)bicyclo[1.1.1]pentan-1-yl]acetic acid

(2R)-2-{[(tert-butoxy)carbonyl]amino}-3,3,3-trifluoropropanoic acid