tert-butyl 4-[4-[[2-[[(2S)-1-[[(2S)-3-cyclopentyl-1-oxo-1-phenylmethoxypropan-2-yl]amino]-1,4-dioxo-4-phenylmethoxybutan-2-yl]amino]-2-oxoethyl]-ethylamino]-4-oxobutyl]piperidine-1-carboxylate                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气   、                                                                                                  
溶剂黄146                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇   、                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 18.0h,
                                                                                                                生成                                                 (3S)-4-[[(1S)-1-carboxy-2-cyclopentylethyl]amino]-3-[[2-[ethyl(4-piperidin-1-ium-4-ylbutanoyl)amino]acetyl]amino]-4-oxobutanoic acid;2,2,2-trifluoroacetate