1-{7-chloro-1-[2-methyl-4-(2-methyl-benzoylamino)-benzoyl]-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yloxycarbonylmethyl}-piperazine dihydrochloride   、                                                                                      
三甲基乙酰氯                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙酸乙酯                                                                                  为溶剂,
                                                                                                                                                    反应 20.0h,
                                                                                                                生成                                                 
{7-chloro-1-[2-methyl-4-(2-methyl-benzoylamino)-benzoyl]-2,3,4,5-tetrahydro-1H-benzo[b]azepin-5-yl} [4-(2,2-dimethyl-propionyl)-piperazin-1-yl]acetate hydrochloride