(1R,4R)- (S)-2-Amino-N-(4-dimethylamino-cyclohexyl)-N-isopropyl-propionamide

(S)-2-Amino-N-cyclopropyl-N-(2-dimethylamino-cyclohexyl)-propionamide

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

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

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

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

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

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

N-[2-(Dimethylamino)cyclohexyl]-N-methylglycine

[1-(2-Hydroxy-ethyl)-piperidin-4-yl]-carbamic acid tert-butyl ester

[1-(2-Hydroxy-ethyl)-piperidin-4-ylmethyl]-methyl-carbamic acid tert-butyl ester