(4-Methoxyphenyl)methyl 3-formyl-8-oxo-7-[(2-phenylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 、
甲氧羰基亚甲基三苯基正膦 生成 (4-methoxyphenyl)methyl 3-[(E)-3-methoxy-3-oxoprop-1-enyl]-8-oxo-7-[(2-phenylacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate