ethoxy-(3-pyridin-4-yl-pyrazol-1-yl)-acetic acid   、                                                                                      benzyl N-[4-(aminomethyl)benzenecarboximidoyl]carbamate;dihydrochloride                                                                                                                                                                                                                                                                                                          以to give (RS)-[amino-(4-{[2-ethoxy-2-(3-pyridin-4-yl-pyrazol-1-yl)-acetylamino]-methyl}-phenyl)-methylene]-carbamic acid benzyl ester的产率得到(RS)-[amino-(4-{[2-ethoxy-2-(3-pyridin-4-yl-pyrazol-1-yl)-acetylamino]-methyl}-phenyl)-methylene]-carbamic acid benzyl ester