4-methoxybenzyl (6R,7R)-3-((iodotriphenylphosphanyl)methyl)-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 、
2-formyl-4-diphenylmethyloxy-5-p-methoxybenzyloxypyridine-N-oxide 生成 p-methoxybenzyl (6R,7R)-7-phenylacetamido-3-[2(4-diphenylmethyloxy-5-p-methoxybenzyloxypyridine-N-oxide-2-yl)vinyl]-ceph-3-em-4-carboxylate