3-{tert-butoxycarbonyl-[2-(1-butoxy)-5-(5-trifluoromethyl-tetrazol-1-yl)-benzyl]-amino}-[2S,3S]-2-phenylpiperidine-1-carboxylic acid tert-butyl ester   、                                                                                      
盐酸   、                                                                                      
乙醇                                                                                                                                                                                              以
                                                                                         
1,4-二氧六环                                                                                  为溶剂,
                                                                                                                                                                                        以to give the title compound as a white crystals from ethanol (218 mg)的产率得到[2-(1-Butoxy)-5-(5-trifluoromethyl-tetrazol-1-yl)-benzyl]-([2S,3S]-2-phenylpiperidin-3-yl)amine dihydrochloride