4-(3,4-dichloro-phenyl)-1-[4-((S)-4-hydroxy-6-aza-spiro[2.5]oct-6-yl)-4-oxo-butyl]-3-methyl-piperazin-2-one                                                                                                                                                              在
                                                                                                                                                                                 Reprosil Chiral NR                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇   、                                                                                         
正庚烷                                                                                  为溶剂,
                                                                                                                                                                                        以64%的产率得到(R)-4-(3,4-dichloro-phenyl)-1-[4-((S)-4-hydroxy-6-aza-spiro[2.5]oct-6-yl)-4-oxo-butyl]-3-methyl-piperazin-2-one