diphenylmethyl (2S,5R,6R)-6-{2S-2-(3-phenylpropionoyl)amino-2-phenylmethyl-acetamido}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo [3,2,0] heptane-2-carboxylate 、
ethyl acetate n-hexane 在
potassium permanganate 、
双氧水 作用下,
以
水 、
溶剂黄146 为溶剂,
以53%的产率得到diphenylmethyl (2S,5R,6R)-6-{2S-2-(3-phenylpropionoyl)amino-2-phenylmethyl-acetamido}-3,3-dimethyl-7-oxo-4,4-dioxo-4-thia-1-azabicyclo [3,2,0] heptane-2-carboxylate