(S)-2-Amino-N-ethyl-N-((S)-1-methyl-piperidin-3-yl)-propionamide

(S)-2-Amino-3-methyl-N-((S)-1-methyl-pyrrolidin-2-ylmethyl)-butyramide

(S)-2-Amino-3-methyl-N-(1-methyl-piperidin-3-ylmethyl)-butyramide

(S)-2-Amino-3,N-dimethyl-N-(1-methyl-piperidin-4-yl)-butyramide

(S)-2-Amino-N-ethyl-3-methyl-N-((R)-1-methyl-piperidin-3-yl)-butyramide

(S)-2-Amino-N-(4-dimethylamino-cyclohexyl)-N-ethyl-3-methyl-butyramide

(S)-2-Amino-N-isopropyl-3-methyl-N-(1-methyl-piperidin-2-ylmethyl)-butyramide

(S)-2-Amino-N-cyclopropyl-3-methyl-N-(1-methyl-piperidin-3-yl)-butyramide

(S)-2-Amino-N-cyclopropyl-3-methyl-N-(1-methyl-piperidin-4-ylmethyl)-butyramide

[(S)-1-(2-Hydroxy-ethyl)-piperidin-3-yl]-carbamic acid tert-butyl ester

[(S)-1-(2-Hydroxy-ethyl)-pyrrolidin-2-ylmethyl]-methyl-carbamic acid tert-butyl ester