3-((1S)-1-phenylmethyloxycarbonylamino-2-methyl-propyl)-5-phenoxymethyl-4,5-dihydro-isoxazole-5-carboxylic acid ethyl ester 在
sodium hydroxide 、
水 作用下,
以
四氢呋喃 为溶剂,
反应 2.5h,
以10%的产率得到3-[(1S)-1-phenylmethyl-oxycarbonylamino-2-methyl-propyl]-5-phenoxymethyl-4,5-dihydro-isoxazole-5-carboxylic acid