1-cyclohexyl-5-(3,3-dimethyl-2-oxo-butyl)-1H-1,3,5-benzotriazepine-2,4(3H,5H)-dione   、                                                                                      
4-溴丁酸苄酯                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         DMF (N,N-dimethyl-formamide)                                                                                  为溶剂,
                                                                                                                                                    反应 72.5h,
                                                                                                                以57%的产率得到(1-cyclohexyl-5-(3,3-dimethyl-2-oxo-butyl)-2,4-dioxo-1,2,4,5-tetrahydro-1,3,5-benzotriazepin-3-yl)-butyric acid benzyl etser