(S)-2-{[(2-Chloro-acetyl)-methyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

3-{[(2-Chloro-acetyl)-isopropyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

2-{[(2-Chloro-acetyl)-cyclopropyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

(R)-3-[(2-Chloro-acetyl)-cyclopropyl-amino]-piperidine-1-carboxylic acid tert-butyl ester

(S)-3-(2-Chloro-acetylamino)-piperidine-1-carboxylic acid benzyl ester

(S)-3-[(2-Chloro-acetyl)-methyl-amino]-pyrrolidine-1-carboxylic acid benzyl ester

{4-[(2-Chloro-acetyl)-methyl-amino]-cyclohexyl}-carbamic acid benzyl ester

(1R,4R)-{4-[(2-Chloro-acetyl)-methyl-amino]-cyclohexyl}-carbamic acid benzyl ester

(R)-3-[(2-Chloro-acetyl)-isopropyl-amino]-pyrrolidine-1-carboxylic acid benzyl ester

(1R,4R)-{4-[(2-Chloro-acetyl)-isopropyl-amino]-cyclohexyl}-carbamic acid benzyl ester

(S)-2-{[(2-Chloro-acetyl)-cyclopropyl-amino]-methyl}-pyrrolidine-1-carboxylic acid benzyl ester