6-(2,2-dimethyl-5-oxo-4-phenyl-1-imidazolidinyl)-penicillanic acid 、
Pivaloyloxymethyl 6-alpha-(Amino-methyl)penicillanate 1,1-Dioxide 生成 (2S,5R)-6-(2,2-dimethyl-5-oxo-4-phenylimidazolidin-1-yl)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid;2,2-dimethylpropanoyloxymethyl (2S,5R,6S)-6-(aminomethyl)-3,3-dimethyl-4,4,7-trioxo-4λ6-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate