3-[4-((1-carbo-tert-butoxy-1phenyl)methoxy)-3-propylphenyl]methyl-5carbobenzyloxy-2-ethyl-7-methyl-3H-imidazo[4,5-b]pyridine   、                                                                                      
三氟乙酸                                                                                                                                                              在
                                                                                                                                                                                 crude mixture   、                                                                                                  Azane;chloroform;methanol;hydrate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 2.5h,
                                                                                                                以to give 3.8 mg of the title compound as a white solid的产率得到3-[4-((1-carboxy-1-phenyl)methoxy)-3-propylphenyl]methyl-5-carbobenzyloxy-2-ethyl-7-methyl-3H-imidazo[4,5-b]pyridine