ethyl 1-(3-tert-butoxycarbonylamino-3-methyl-butyl)-1H-imidazo[4,5-c]pyridine-6-carboxylate   、                                                                                      ethyl 3-(3-tert-butoxycarbonylamino-3-methyl-butyl)-3H-imidazo[4,5-c]pyridine-6-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 
三氟乙酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 1.5h,
                                                                                                                生成                                                 
ethyl 3-(3-amino-3-methyl-butyl)-3H-imidazo[4,5-c]pyridine-6-carboxylate   、                                                                                             
ethyl 1-(3-amino-3-methyl-butyl)-1H-imidazo[4,5-c]pyridine-6-carboxylate