3-{[3-(4-carbamimidoylphenyl)-1-methyl-2,4-dioxo-1,3,8-triazaspiro[4.5]decane-8-carbonyl]amino}-3-phenylpropionic acid ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium hydroxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 3-{[3-(4-Carbamimidoyl-phenyl)-1-methyl-2,4-dioxo-1,3,8-triaza-spiro[4.5]decane-8-carbonyl]-amino}-3-phenyl-propionic acid