3-氟苯酚   、                                                                                      
9-溴-1-壬醇   、                                                                                      
9-(3-fluoro-phenoxy)-nonan-1-ol   、                                                                                      
9-(3-fluoro-phenoxy)-nonanoic acid   、                                                                                      (R)-benzyl 3-amino-4-(dimethylamino)butanoate dihydrochloride                                                                                                                                                                                                                                                                                                          以to produce (R)-4-dimethylamino-3-[9-(3-fluoro-phenoxy)-nonanoylamino]-butyric acid benzyl ester, which的产率得到(R)-4-dimethylamino-3-[9-(3-fluoro-phenoxy)-nonanoylamino]-butyric acid benzyl ester