rac-(5R,7R,8R)-8-hydroxy-7-(2,2,2-trifluoroethoxy)-2-(4-(trifluoromethoxy)phenyl)-2-azaspiro[4.5]decan-1-one   、                                                                                      
异丙醇                                                                                                                                                                                              以
                                                                                         
正庚烷                                                                                  为溶剂,
                                                                                                                                                                                        以to provide (5R,7R,8R)-8-hydroxy-7-(2,2,2-trifluoro-ethoxy)-2-(4-trifluoromethoxy-phenyl)-2-aza-spiro[4.5]decan-1-one (7 mg), MS (ESI)的产率得到rac-(5R,7R,8R)-8-hydroxy-7-(2,2,2-trifluoroethoxy)-2-(4-(trifluoromethoxy)phenyl)-2-azaspiro[4.5]decan-1-one