(Z)-(2S)-1-[cyclohexylmethylsulfonyl]-N'2-hydroxy-2-piperidinecarboximidamide   、                                                                                      
5-[(1,3-dioxo-2,3-dihydro-1H-2-isoindolyl)methyl]-2-furoic acid                                                                                                                                                              在
                                                                                                                                                                                 
[[amino-[(2S)-1-(cyclohexylmethylsulfonyl)piperidin-2-yl]methylidene]amino] 5-[(1,3-dioxoisoindol-2-yl)methyl]furan-2-carboxylate                                                                                                                                  作用下,
                                                                                                                                                                                                                            以to afford (Z)-(2S)-1-[(cyclohexylmethyl)sulfonyl]-N′2-[(5-[(1,3-dioxo-2,3-dihydro-1H-2-isoindolyl)methyl]-2-furylcarbonyl)oxy]-2-piperidinecarboximidamide as a yellow oil的产率得到[[amino-[(2S)-1-(cyclohexylmethylsulfonyl)piperidin-2-yl]methylidene]amino] 5-[(1,3-dioxoisoindol-2-yl)methyl]furan-2-carboxylate