sodium 6α-formamido-6β-<(2R)-2-(3,4-dihydroxyphenyl)-2-<(4-ethyl-2,3-dioxopiperazin-1-yl)carbonylamino>acetamido>penicillanate                                                                                                                                                              在
                                                                                                                                                                                 
sodium hydroxide                                                                                                                                  作用下,
                                                                                                                                                                                        反应 0.2h,
                                                                                                                以22%的产率得到6β-<(2R)-2-(3,4-dihydroxyphenyl)-2-
ureido>acetamido>-6α-formamidopenicillanic acid