N-t-Butoxycarbonyl-(S)-prolyl-(S)-leucyl-(S)-valyl-2<1-(R)-amino-3-cyano-prop-1-yl>thiazole-4-carboxylic acid ethyl ester 在
sodium hydroxide 作用下,
以
1,4-二氧六环 为溶剂,
生成 2-[(R)-1-((S)-2-{(S)-2-[((S)-1-tert-Butoxycarbonyl-pyrrolidine-2-carbonyl)-amino]-4-methyl-pentanoylamino}-3-methyl-butyrylamino)-3-cyano-propyl]-thiazole-4-carboxylic acid