1-(3-(4-氨基苯基)-4,5-二氢-1H-吡唑-1-基)-2-(3,4-二甲氧基苯基)乙酮   、                                                                                      
环丙基甲酰氯                                                                                                                                                              在
                                                                                                                                                                                 
cyclopropanecarboxylic acid (4-{1-[2-(3,4-dimethoxy-phenyl)-acetyl]-4,5-dihydro-H-pyrazol-3-yl}-phenyl)-amide                                                                                                                                  作用下,
                                                                                                                                                                                                                            以to give final compound cyclopropanecarboxylic acid (4-{1-[2-(3,4-dimethoxy-phenyl)-acetyl]-4,5-dihydro-1H-pyrazol-3-yl}-phenyl)-amide (19)的产率得到cyclopropanecarboxylic acid (4-{1-[2-(3,4-dimethoxy-phenyl)-acetyl]-4,5-dihydro-H-pyrazol-3-yl}-phenyl)-amide