(2RS,3S)-3-amino-4-cyclohexyl-2-hydroxybutyric acid isopropyl ester 、 (2S)-N-[(2S)-1-hydrazinyl-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]-4-morpholin-4-yl-2-(naphthalen-1-ylmethyl)-4-oxobutanamide 生成 (2RS,3S)-3-(N-(2-(1-naphthylmethyl)-3-(morpholinocarbonyl)-propionyl)-L-histidyl)amino-2-hydroxy-4-cyclohexylbutyric acid isopropyl ester