(3aS,7aS)-1-[1-(4-methyl-4-piperidyl)-4-piperidyl]-3a,4,5,6,7,7a-hexahydro-3H-benzoimidazol-2-one   、                                                                                      
丙酰氯                                                                                                                                                                                                                                                                                                          以the title compound (740 mg, 51.7%) was obtained的产率得到(3aS,7aS)-3-[1-(4-methyl-1-propanoyl-4-piperidyl)-4-piperidyl]-3a,4,5,6,7,7a-hexahydro-1H-benzimidazol-2-one