1-[N-(methylsulfonyl)-D-phenylalanyl]-L-proline 、 benzyl N-[4-(aminomethyl)piperidine-1-carboximidoyl]carbamate 在
benzyl N-[4-(aminomethyl)piperidine-1-carboximidoyl]carbamate 作用下,
以83的产率得到benzyl (NE)-N-[amino-[4-[[[(2S)-1-[(2R)-2-(methanesulfonamido)-3-phenylpropanoyl]pyrrolidine-2-carbonyl]amino]methyl]piperidin-1-yl]methylidene]carbamate