3-(4-{3-[3-methoxy-4-(3-o-tolyl-ureido)-phenyl]-2-oxo-2H-pyridin-1-ylmethyl}-phenyl)-butyric acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium hydroxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以89%的产率得到(3R)-3-(4-{[3-(3-methoxy-4-{[(2-methylphenyl)carbamoyl]amino}phenyl)-2-oxo-1,2-dihydropyridin-1-yl]methyl}phenyl)butanoic acid