(S)-2-Amino-3,N-dimethyl-N-(2-oxo-2-thiophen-2-yl-ethyl)-butyramide

(S)-2-Amino-N-(2-oxo-2-thiazol-2-yl-ethyl)-propionamide

(S)-2-Amino-N-furan-2-ylmethyl-3-methyl-butyramide

(S)-2-Amino-N-furan-2-ylmethyl-N-isopropyl-propionamide

(S)-2-Amino-N-furan-2-ylmethyl-3,N-dimethyl-butyramide

(S)-2-Amino-N-methyl-N-(3-methyl-thiophen-2-ylmethyl)-propionamide

2-[(2-Hydroxy-ethyl)-isopropyl-amino]-1-(1H-pyrrol-2-yl)-ethanone

2-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-1-(1H-pyrrol-2-yl)-ethanone

2-Amino-N-cyclopropyl-N-[2-oxo-2-(1H-pyrrol-2-yl)-ethyl]-acetamide

(S)-2-Amino-N-cyclopropyl-N-[2-oxo-2-(1H-pyrrol-2-yl)-ethyl]-propionamide

(S)-2-Chloromethyl-pyrrolidine-1-carboxylic acid tert-butyl ester