p-nitrobenzyl 5,6-trans-6-ethyl-3-<(2-hydroxyethyl)thio>-7-oxo-4-thia-1-azabicyclo<3.2.0>hept-2-ene-2-carboxylate 在
palladium on activated charcoal
氢气 作用下,
以
四氢呋喃 为溶剂,
反应 3.5h,
以73%的产率得到sodium 5,6-trans-6-ethyl-3-<(2-hydroxyethyl)thio>-7-oxo-4-thia-1-azabicyclo<3.2.0>hept-2-ene-2-carboxylate