4-methoxybenzyl (6R,7R)-3-((3-(tert-butoxycarbonyl)-5-fluoro-2,6-dioxo-3,6-dihydropyrimidin-1(2H)-yl)methyl)-8-oxo-7-(2-(thiophen-2-yl)acetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 在
三乙基硅烷 、
三氟乙酸 作用下,
以90%的产率得到(6R,7R)-3-[(5-fluoro-2,4-dioxo-1H-pyrimidin-3-yl)methyl]-8-oxo-7-[(2-thiophen-2-ylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid