(4R)-2-[2-(diphenylphosphanyl)phenyl]-4-(propan-2-yl)-4,5-dihydro-1,3-oxazole

(4R)-2-[2-(trifluoromethoxy)phenyl]-1,3-thiazolidine-4-carboxylic acid

(4R)-2-[3-(difluoromethoxy)phenyl]-1,3-thiazolidine-4-carboxylic acid

(4R)-2-[3-(difluoromethoxy)phenyl]-3-{[(9H-fluoren-9-yl)methoxy]carbonyl}-1,3-thiazolidine-4-carboxylic acid

(4R)-2-[4-(trifluoromethyl)phenyl]-1,3-thiazolidine-4-carboxylic acid

(4R)-3,3-difluorooxan-4-amine hydrochloride

(4R)-3,4-dihydro-1H-2-benzopyran-4-amine hydrochloride

(4R)-3,4-dihydro-2H-1-benzopyran-4,6-diol

(4R)-3,4-dihydro-2H-1-benzopyran-4-amine hydrochloride

(4R)-3,4-dihydro-2H-1-benzothiopyran-4-ol

(4R)-3,4-dihydrospiro[1-benzopyran-2,1'-cyclobutane]-4-ol

(4R)-3,4-dihydrospiro[1-benzopyran-2,1'-cyclohexane]-4-ol

(4R)-3,4-dihydrospiro[1-benzopyran-2,1'-cyclopentane]-4-ol

(4R)-3,5,5-trimethyl-1,3-thiazolidine-4-carboxylic acid

(4R)-3-(1H-indole-3-carbonyl)-1,3-thiazolidine-4-carboxylic acid

(4R)-3-(2-chloroacetyl)-4-(propan-2-yl)-1,3-oxazolidin-2-one

(4R)-3-(2-methylbutanoyl)-1,3-thiazolidine-4-carboxylic acid

(4R)-3-acetyl-1,3-thiazolidine-4-carboxylic acid

(4R)-3-cyclopentanecarbonyl-1,3-thiazolidine-4-carboxylic acid

(4R)-3-methyl-1,3-thiazolidine-4-carboxylic acid

(4R)-3-propanoyl-1,3-thiazolidine-4-carboxylic acid

(4R)-3-[(tert-butoxy)carbonyl]-1,1-dioxo-1lambda6,3-thiazolidine-4-carboxylic acid

(4R)-3-[(tert-butoxy)carbonyl]-1,3-thiazolidine-4-carboxylic acid

(4R)-3-[(tert-butoxy)carbonyl]-2,2-dimethyl-1,3-oxazolidine-4-carboxylic acid

(4R)-3-[2-(4-chlorophenoxy)-2-methylpropanoyl]-1,3-thiazolidine-4-carboxylic acid

(4R)-3-{[(9H-fluoren-9-yl)methoxy]carbonyl}-1,3-thiazolidine-4-carboxylic acid

(4R)-3-{[(9H-fluoren-9-yl)methoxy]carbonyl}-2-[4-(trifluoromethyl)phenyl]-1,3-thiazolidine-4-carboxylic acid

(4R)-4,5-diaminopentanoic acid dihydrochloride

(4R)-4-(2-bromoethyl)-2,2-dimethyl-1,3-dioxolane

(4r)-4-(2-methylphenyl)bicyclo[2.1.1]hexane-2-carboxylic acid

(4r)-4-(3-chlorophenyl)bicyclo[2.1.1]hexane-2-carboxylic acid

(4r)-4-(3-fluorophenyl)bicyclo[2.1.1]hexane-2-carboxylic acid

(4r)-4-(3-methylphenyl)bicyclo[2.1.1]hexane-2-carboxylic acid

(4r)-4-(3-tert-butylphenyl)bicyclo[2.1.1]hexane-2-carboxylic acid

(4r)-4-(4-chlorophenyl)bicyclo[2.1.1]hexane-2-carboxylic acid

(4r)-4-(4-methylphenyl)bicyclo[2.1.1]hexane-2-carboxylic acid

(4R)-4-(aminomethyl)-1,3-dioxolan-2-one hydrochloride

(4R)-4-(aminomethyl)-5,5-dimethyl-1,3-oxazolidin-2-one hydrochloride

(4R)-4-(aminomethyl)pyrrolidin-2-one; trifluoroacetic acid

(4R)-4-(bromomethyl)-2,2-dimethyl-1,3-dioxolane

(4R)-4-(bromomethyl)pyrrolidin-2-one

(4R)-4-(chloromethyl)-1,3-oxazolidine-2,5-dione

(4R)-4-(chloromethyl)-2,2-dimethyl-1,3-dioxolane

(4R)-4-(hydroxymethyl)-1,3-oxazolidin-2-one

(4R)-4-(hydroxymethyl)imidazolidin-2-one