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

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

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

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

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

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

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

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

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

(2R,4R)-2,4-dimethylazetidine hydrochloride

(2R,4R)-2,4-dimethylpiperidine hydrochloride

(2R,4R)-2-(fluoromethyl)-4-methoxypyrrolidine hydrochloride

(2R,4R)-2-(methanesulfonylmethyl)-4-methoxypyrrolidine hydrochloride

(2R,4R)-2-(oxan-4-yl)-3,4-dihydro-2H-1-benzopyran-4-ol

(2R,4R)-2-(propan-2-yl)-3,4-dihydro-2H-1-benzopyran-4-ol

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

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

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

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

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

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

(2R,4R)-4-(trifluoromethoxy)pyrrolidine-2-carboxylic acid hydrochloride

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

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

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

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

(2R,4R)-4-hydroxy-1-(4-methylbenzenesulfonyl)pyrrolidine-2-carboxylic acid

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

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

(2R,4R)-4-hydroxypyrrolidine-2-carboxylic acid

(2R,4R)-4-hydroxypyrrolidine-2-carboxylic acid hydrochloride

(2R,4R)-4-methoxy-1-(prop-2-enoyl)pyrrolidine-2-carboxylic acid

(2R,4R)-4-methoxy-2-[(methylsulfanyl)methyl]pyrrolidine

(2R,4R)-4-methoxy-N-methylpyrrolidine-2-carboxamide hydrochloride

(2R,4R)-4-methylpyrrolidine-2-carboxylic acid hydrochloride

(2R,4R)-pentane-2,4-diol

(2R,4R,5R,6S)-4-(hydroxymethyl)-10-imino-3,7-dioxa-1,9-diazatricyclo[6.4.0.0,2,6]dodeca-8,11-dien-5-ol hydrochloride

(2R,4R,5R,6S)-5-hydroxy-4-(hydroxymethyl)-11-methyl-3,7-dioxa-1,9-diazatricyclo[6.4.0.0,2,6]dodeca-8,11-dien-10-one

(2R,4r,6S)-1-benzyl-2,6-dimethylpiperidin-4-amine

(2R,4r,6S)-1-[(tert-butoxy)carbonyl]-2,6-dimethylpiperidine-4-carboxylic acid

(2R,4r,6S)-1-{[(9H-fluoren-9-yl)methoxy]carbonyl}-2,6-dimethylpiperidine-4-carboxylic acid

(2R,4r,6S)-2,4,6-trimethylpiperidine hydrochloride

(2R,4r,6S)-2,6-dimethyl-4-(5-methyl-1,3,4-oxadiazol-2-yl)piperidine hydrochloride

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

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