Methyl 2-(5-chloro-3-((1-(2,4-difluorobenzyl)-6-oxo-1,6-dihydropyridin-3-yl)methyl)-2-methyl-1H-indol-1-yl)acetate   、                                                                                      
单水氢氧化锂                                                                                                                                                              在
                                                                                                                                                                                 crude product   、                                                                                                  Acetonitrile ethanol                                                                                                                                  作用下,
                                                                                                                                                                                                                            以to give tiny white crystals (0.170 g, 66% yield)的产率得到2-(5-chloro-3-((1-(2,4-difluorobenzyl)-6-oxo-1,6-dihydropyridin-3-yl)-methyl)-2-methyl-1H-indol-1-yl)acetic acid