N-[2-(Acetyl-isopropyl-amino)-cyclohexyl]-2-amino-acetamide

N-[1-((S)-2-Amino-propionyl)-piperidin-4-ylmethyl]-acetamide

N-[(R)-1-((S)-2-Amino-propionyl)-pyrrolidin-3-yl]-N-methyl-acetamide

(S)-N-[4-(Acetyl-methyl-amino)-cyclohexyl]-2-amino-propionamide

N-[1-((S)-2-Amino-propionyl)-pyrrolidin-3-ylmethyl]-N-ethyl-acetamid

N-[1-((S)-2-Amino-propionyl)-piperidin-4-ylmethyl]-N-ethyl-acetamide

(S)-N-[2-(Acetyl-ethyl-amino)-cyclohexyl]-2-amino-propionamide

N-[1-((S)-2-Amino-propionyl)-piperidin-4-yl]-N-isopropyl-acetamide

(1R,4R)-(S)-N-[4-(Acetyl-isopropyl-amino)-cyclohexyl]-2-amino-propionamide

N-[(S)-1-((S)-2-Amino-propionyl)-pyrrolidin-3-yl]-N-cyclopropyl-acetamide

N-[1-((S)-2-Amino-propionyl)-piperidin-4-ylmethyl]-N-cyclopropyl-acetamide