1,4-二氧六环 、
potassium hydrogencarbonate 、 4-Nitrobenzyl 5R,3-(3-carbamoylphenoxy)-6S-(1R-hydroxyethyl)-7-oxo-4-thia-1-azabicyclo[3,2,0]hept-2-ene-2-carboxylate 在
palladium on charcoal 作用下,
以
水 为溶剂,
生成
Potassium 5R,3-(3-carbamoylphenoxy)-6S-(1R-hydroxyethyl)-7-oxo-4-thia-1-azabicyclo[3,2,0]hept-2-ene-2-carboxylate