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

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

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

(S)-2-Amino-N-cyclopropyl-N-(1-methyl-piperidin-2-ylmethyl)-propionamide

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

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

(1R,4R)-(S)-2-Amino-N-(4-dimethylamino-cyclohexyl)-3,N-dimethyl-butyramide

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

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

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

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