cyclopentyl-{2-[3-(2,3-dichloro-phenyl)-2,5-dimethyl-pyrazolo[1,5-a]pyrimidin-7-ylamino]-ethyl}-carbamic acid tert-butyl ester                                                                                                                                                                                              以
                                                                                         concentrated aqueous hydrochloric acid   、                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                                                        以94%的产率得到N-cyclopentyl-N'-[3-(2,3-dichloro-phenyl)-2,5-dimethyl-pyrazolo[1,5-a]pyrimidin-7-yl]-ethane-1,2-diamine hydrochloride salt