N2-[N-[N-[N-[N-[3-(tert-butoxycarbonyl)propionyl]-O-tert-butyl-L-α-aspartyl]-O-tert-butyl-L-α-glutamyl]-2-methyl-L-phenylalanyl]-3-methyl-L-valyl]-N1-[1(S)-(dimethoxymethyl)-3-butenyl]-L-leucinamide                                                                                                                                                              在
                                                                                                                                         
水                                                                                                                                                                                                                               氮   、                                                                                                  
甲苯   、                                                                                                  
乙醚                                                                                                                                  作用下,
                                                                                                                以
                                                                                         trifluoracetic acid-dichloromethane                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以to give 30 mg of 2(RS)-[[N[[N-(N-[N-[N-(3-carboxypropionyl)-L-α-aspartyl]-L-α-glutamyl]-2-methyl-L-phenylalanyl]-3-methyl-L-valyl]-L-leucyl]amino]-4-pentenaldehyde的产率得到(4S)-4-[N-((1S)-1-{N-[(1S)-1-(N-{(1S)-3-Methyl-1-[N-(2-oxo-1-prop-2-enylethyl)carbamoyl]butyl}carbamoyl)-2,2-dimethylpropyl]carbamoyl}-2-(2-methylphenyl)ethyl)carbamoyl]-4-[(2S)-3-carboxy-2-(3-carboxypropanoylamino)propanoylamino]butanoic acid