(2-{5-[2-(4-fluorobenzylcarbamoyl)-6-methylpyridin-4-yl]tetrazol-2-yl}acetylamino)acetic acid tert-butyl ester                                                                                                                                                              在
                                                                                                                                                                                 
三氟乙酸   、                                                                                                  
ethyl acetate n-hexane   、                                                                                                  
乙醚                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷   、                                                                                         
三氟乙酸                                                                                  为溶剂,
                                                                                                                                                    反应 16.0h,
                                                                                                                以Trituration of the resulting product with diethyl ether gave 0.120 mg (90%) of (2-{5-[2-(4-fluoro-benzylcarbamoyl)-6-methyl-pyridin-4-yl]-tetrazol-2-yl}-acetylamino)-acetic acid as a white solid的产率得到(2-{5-[2-(4-fluorobenzylcarbamoyl)-6-methylpyridin-4-yl]tetrazol-2-yl}acetylamino)acetic acid