(2R,4r,6S)-2,6-dimethyloxane-4-sulfonyl chloride

(2R,4r,6S)-2,6-dimethylpiperidin-4-amine dihydrochloride

(2R,4r,6S)-2,6-dimethylpiperidin-4-ol

(2R,4r,6S)-2,6-dimethylpiperidine-4-carboxylic acid

(2R,4r,6S)-2,6-dimethylpiperidine-4-carboxylic acid hydrochloride

(2R,4r,6S)-4-(bromomethyl)-2,6-dimethyloxane

(2R,4r,6S)-4-ethoxy-2,6-dimethylpiperidine hydrochloride

(2R,4r,6S)-4-tert-butyl-2,6-dimethylpiperidine hydrochloride

(2R,4S)-1-acetyl-4-hydroxypyrrolidine-2-carboxylic acid

(2R,4S)-1-acetyl-4-methoxypyrrolidine-2-carboxylic acid

(2R,4S)-1-methanesulfonyl-4-methoxypyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-(1H-1,2,3-triazol-1-yl)pyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-(difluoromethoxy)pyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-(trifluoromethoxy)pyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)pyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-fluoropyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-hydroxypyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-isocyano-2-(methoxycarbonyl)pyrrolidine

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-methanesulfonylpyrrolidine-2-carboxylic acid

(2R,4S)-1-[(tert-butoxy)carbonyl]-4-methoxypyrrolidine-2-carboxylic acid

(2R,4S)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-4-(trifluoromethoxy)pyrrolidine-2-carboxylic acid

(2R,4S)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-4-fluoropyrrolidine-2-carboxylic acid

(2r,4s)-2-amino-7-azaspiro[3.5]nonan-6-one dihydrochloride

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

(2R,4S)-2-methyl-3,4-dihydro-2H-1-benzopyran-4-ol

(2R,4S)-2-methyl-4-phenylpyrrolidine hydrochloride

(2R,4S)-2-pentyl-3,4-dihydro-2H-1-benzopyran-4-ol

(2R,4S)-2-propyl-3,4-dihydro-2H-1-benzopyran-4-ol

(2R,4S)-2-[(benzyloxy)methyl]-4-bromooxolane

(2R,4S)-4-(1H-1,2,3-triazol-1-yl)pyrrolidine-2-carboxylic acid dihydrochloride

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

(2R,4S)-4-amino-1-[(tert-butoxy)carbonyl]pyrrolidine-2-carboxylic acid

(2R,4S)-4-aminopentan-2-ol hydrochloride

(2R,4S)-4-azido-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}pyrrolidine-2-carboxylic acid

(2R,4S)-4-azido-2-methylpyrrolidine hydrochloride

(2R,4S)-4-cyclohexyl-2-methylpyrrolidine

(2R,4S)-4-fluoro-1-methylpyrrolidine-2-carboxylic acid hydrochloride

(2R,4S)-4-fluoro-2-(trifluoromethyl)pyrrolidine hydrochloride

(2R,4S)-4-fluoro-2-methylpyrrolidine hydrochloride

(2R,4S)-4-fluoropyrrolidine-2-carboxylic acid hydrochloride

(2R,4S)-4-hydroxy-1-(2,4,6-trimethylbenzenesulfonyl)pyrrolidine-2-carboxylic acid

(2R,4S)-4-hydroxy-1-methylpyrrolidine-2-carboxylic acid

(2R,4S)-4-hydroxy-N,N-dimethylpyrrolidine-2-carboxamide hydrochloride

(2R,4S)-4-hydroxy-N-methylpyrrolidine-2-carboxamide hydrochloride

(2R,4S)-4-hydroxypiperidine-2-carboxylic acid hydrochloride