(S)-N-[(1S,2S)-1-(cyclohexylmethyl)-2-hydroxy-3-(2-oxo-1-piperidinyl)propyl]-alpha-[(R)-alpha-(3,3-dimethyl-2-oxobutyl)hy drocinnamamido]-3-t butoxycarbonylimidazole-4-propionamide 、
potassium carbonate 以
甲醇 为溶剂,
以whereby there was obtained (S)-N-[(1S,2S)-1-(cyclohexylmethyl)-2-hydroxy-3-(2-oxopiperidino)propyl]-α-[(R)-α-(3,3-dimethyl-2-oxobutyl)hydrocinnamamido]imidazole-4propionamide as an amorphous solid, MS的产率得到(S)-N-[(1S,2S)-1-(cyclohexylmethyl)-2-hydroxy-3-(2-oxopiperidino)propyl]-α-[(R)-α-(3,3-dimethyl-2-oxobutyl)hydrocinnamamido]imidazole-4-propionamide