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